Your Function.
Your Freedom.

Foreword

There is a woman in Ohio who can tell you the exact month her mother stopped gardening. Not the year. The month.

She remembers because her mother had always been the one kneeling in the dirt by the second week of April, without fail, for forty years. And then one April, she wasn’t. When her daughter asked why, her mother laughed it off. Busy spring. Bad knee. Next year.

There was no next year with the garden. Within eighteen months, her mother needed help getting up from a chair.

What haunts her daughter still is that nothing dramatic happened in between. There was no fall, no diagnosis, no single afternoon she could point to and call the turning point. There had only been a long, quiet drift that nobody thought to watch.

Every generation inherits a different challenge. Our grandparents fought infection. Our parents fought heart disease, diabetes, cancer — the great chronic illnesses of the last century, and we built extraordinary medicine to fight them.

We are living longer than earlier generations could routinely expect, and that brings a different challenge: not only adding years to life, but protecting as much life as possible inside those years.

This is a book about the difference. We will call it function — your ability to do what matters to you, today and years from now. Walk through an airport unassisted. Get up off the floor without using your hands. Carry your own suitcase. Chase a grandchild across a yard and mean it.

Function may be discussed in a doctor’s office, but it is rarely followed as a continuous story across months and years. It does not spike red on a blood test or announce itself with a single number. It changes through ordinary life — the closer parking spot, the shorter walk, the stairs you start avoiding without deciding to — until one day someone looks back and wonders where the last two years went.

This book will not try to alarm you. It will try to do something rarer: help you see clearly. Because here is what almost nobody tells you about decline: it can have a direction long before it has a destination. And direction, while it is still developing, may still be influenced.

That is the entire premise of what follows. Not a warning. An invitation to look — really look — before the picture is already drawn.

This question grew out of a simple observation: people of the same age, and sometimes with similar medical histories, can live remarkably different lives because function is not simply what the body has — it is what the body still allows a person to do. The pages ahead offer a different way to ask about the future: am I still becoming who I want to be, or am I quietly becoming someone else?

The garden is where this story begins. What follows is an invitation to look more closely at the ordinary changes that shape our lives.

Chapter One: The Question Underneath Every Other Question

Ask someone what they want from the rest of their life, and they rarely say a number. They don’t ask for a resting heart rate in the fifties or an A1C below 5.7. Nobody stands at the edge of a beautiful view and thinks, I hope my cholesterol is holding steady.

They say: I want to keep hiking with my kids. I want to dance at my granddaughter’s wedding. I want to travel while my knees still let me. I want to stay in this house until I decide otherwise, not until circumstances decide for me.

Every one of those sentences is about the same thing, expressed differently. They are about function: the ability to do what matters to you.

We have built a remarkable medical system that can measure nearly everything happening inside the body: blood pressure, bone density, kidney filtration, heart rhythm. Each of these matters, and many of them protect us from serious disease long before daily life changes at all. But none of them is the thing you live inside. You don’t experience your cholesterol panel. You experience whether you can carry your own groceries up the stairs without stopping halfway.

Picture two people, both seventy-one, with the same zip code, similar charts, and similar medications. On paper they look nearly interchangeable. One hiked four miles last weekend and is planning a trip. The other hasn’t left the block in three weeks. Stairs have become a project, and a short walk to the mailbox ends with a rest on the way back.

The difference between them is not only their age, and it is not only their behavior. It can come from a painful joint, dizziness they never mentioned, a neighborhood without sidewalks, a bus that no longer stops nearby, a spouse who used to drive, or a life that never gave them the chance to build strength. Function sits where body, activity, and surroundings meet. That is why the same condition can leave two people with very different days.

This is the gap the book is about: the space between what the numbers say and what a person can actually do in their own life. Medical measurements tell us important things about health, sometimes long before we notice any change in daily life. But alongside those measurements belongs another question, one that connects health to the life we actually want to live:

Can I still do what matters to me?

Chapter Two: What Function Actually Is

Say the word “function” to most people and they picture a gym: push-ups, a treadmill, someone’s grandfather doing chair squats in a community center. That isn’t wrong, exactly. It’s just too small. Function isn’t a muscle. It’s closer to an orchestra.

Right now, as you read this sentence, your eyes are making tiny, precise jumps your brain has learned to hide from you. Your inner ear helps you keep your balance. Your nervous system holds a thousand small conversations with your muscles. None of it announces itself, which is why you’ve probably never thought about it until now.

Physical function comes from systems that rarely work alone. Muscles produce force. The heart and lungs sustain effort. The nervous system coordinates timing and balance. But what you can actually do also depends on the demands of the task, the surroundings you’re in, and the help and opportunities available to you.

Three ideas help make this clear, and they are easy to confuse. Capacity is what you are capable of doing under consistent conditions: how far you can walk, how high you can step, or how quickly you can rise from a chair.

Performance is what you actually do in everyday life: how often you walk, which stairs you take, what you carry.

Participation is your involvement in the activities and experiences that matter to you: going to the market, visiting family, traveling, or taking part in your community.

These can drift apart. Someone may have plenty of capacity and rarely use it. Someone else may perform an activity every day, with more effort than before. Participation can shrink even when capacity hasn’t changed, because of a broken elevator, a closed path, or a friend who used to drive. That is why the question “Can I still do what matters to me?” can’t be answered by a single number.

Consider two people who each climb the same flight of stairs. Both reach the top. One arrives ready to keep going. The other pauses, holds the railing, and needs time to recover. The result is the same, but the margin left over is not.

Call it functional reserve: the capacity you still have available beyond what a routine task requires. The less reserve you have, the harder a routine task may feel.

Recovery adds another dimension. Two people may complete the same task but need very different amounts of time before they feel ready to do something else.

A person can keep doing something for years while the margin available beyond that activity slowly shrinks.

Function shows up differently at every stage of life. In childhood it’s the astonishing project of learning to stand, then walk, then run. In adulthood it recedes into the background, spent on work, family, and everything living asks of us. Later it comes back into focus, not because its importance has changed, but because we may finally notice what it has been doing for us all along.

The goals change with every decade. But the importance of being able to participate in your own life never does.

Chapter Three: The Changes You Don’t Notice

Nobody sets out to lose an ability. Even when we deliberately work to improve, the changes themselves can happen so gradually that we barely notice them.

Here is how it often starts. You park a little closer to the store because your arms are full. You do it again the next week. A few months later it isn’t a choice anymore. It’s simply where you park.

You take the elevator instead of the stairs, once, because you’re running late. Then because your knee felt stiff that morning. Then because it’s easier, and you stop noticing you’re doing it.

But not every change in a habit points the same way. A shorter walk may mean a sore knee, a cold, a rainy month, or a new job that leaves you tired. It may mean nothing more than a different routine. What you observe and what it means are two different things. Noticing that you walk less is the start of a question, not the answer to it.

Change can also run in the other direction, and it’s just as easy to miss. A woman in her sixties started walking to the bakery each morning again, something she had stopped doing after a hard winter. For the first few weeks the walk felt the same. By the third month she was going a block farther and no longer stopping at the bench. She didn’t notice until a friend asked how her knee was doing. The improvement had been developing all along, hidden inside unremarkable mornings.

Think of a clock. Stare at the minute hand and it never seems to move. Look away for an hour and it has traveled a long way. The movement was never invisible. You were standing too close to see it happening.

Function can change in much the same way. Some changes arrive suddenly. Others unfold through many small steps, each barely noticeable on its own.

That is why one measurement, taken on one day, tells you only so much. A walking test on a Tuesday shows how you walked that Tuesday. It can’t tell you, by itself, whether Tuesday is better than last spring, or worse, or unchanged. A single photograph can’t show which way something is moving. A sequence can.

So the useful question isn’t only where am I right now. It’s also:

How does today compare with the weeks and months before it, and what might explain the difference?

Chapter Four: The Watch You Stop Feeling

Gradual change is not the only reason we overlook what is happening. Familiarity can also make an adjustment difficult to recognize.

Almost everyone who has bought a new watch remembers the first hour. For that hour you feel it constantly: a small weight on your wrist, a new pressure when you bend your arm. You notice it reaching for your coffee and typing on your keyboard. By evening you don’t notice it at all. The watch hasn’t changed. Your attention has moved on.

This is not a flaw in how the mind works. It is one of its great achievements. A mind that treated every sensation as urgent would be overwhelmed before breakfast, so it learns what deserves attention and what can recede into the background. Most of the time, this serves us well.

But it means that what we notice is shaped by familiarity, not only by what is happening. And familiarity is not a reliable record of how things are changing.

Think about the stairs in your own home. You have climbed them for years, so they feel like the same familiar stairs. The effort may change gradually, while your expectations and habits adjust along with it. Perhaps you started using the handrail at some point.

Ask someone when they began doing that, and they may struggle to name a day. There was probably no single moment. There was a rushed morning with a wet step, then another, and eventually reaching for the rail became part of how they go downstairs. Each adjustment feels like normal life, because it is normal life now.

That experience is worth remembering, but it doesn’t mean every change is invisible. People often notice big shifts quickly. What can escape attention are the gradual shifts that happen inside routines we’ve already accepted. Familiarity protects us from noise, but it can also make useful information easier to overlook.

What helps is not trying harder to feel every change. It is building a few reference points outside our own sense of normal: a note about a regular walk, a record of how a particular climb felt, or a question we ask ourselves at the same time each month. These don’t replace attention. They give attention something steady to compare against.

The watch disappears from your awareness because it has become familiar. Changes in everyday function can do the same thing.

The next time you reach for a familiar handrail, you might ask when that became part of your routine. The answer may offer a useful point of comparison, even if it does not explain the change.

Chapter Five: The Whole Book, Not One Page

Open a novel to a random page and you’ll learn something. A character says something sharp. A scene ends mid-thought. Something clearly matters. What you won’t have is the story.

You won’t know whether that sharp line begins a betrayal or ends a reconciliation. A single page is real, every word of it part of the story, but it cannot tell you what the book is about.

Medicine is extraordinarily good at giving us accurate pages: blood pressure, heart rate, cholesterol, sleep, imaging, laboratory results. Each can matter a great deal, and each answers its own particular questions. But none of them, alone, tells you how a life is going.

So what does the whole story look like? Function is closer to the story that connects those pages. It is the place where the heart’s oxygen delivery, the lungs’ air exchange, the muscles’ force, the joints’ range, the nervous system’s coordination, and the brain’s constant planning all arrive together and shape what you can do today.

When those systems work together, you rarely think about them. You don’t think about your knees on the stairs. You just take them. When something changes, the change may show up in everyday activity, sometimes in ways an isolated measurement does not explain.

Function helps us read the story that emerges when different systems work together. It cannot reveal everything about our health, but it shows something that individual measurements may miss: how those systems contribute to what we are actually able to do. It does not replace the tests that identify specific problems, and it should not be read as a diagnosis.

A person who walks well may still need a blood test. A person who walks slowly may have a harmless explanation. Each measure answers a different question, and the most useful picture often comes from considering them together.

So the value of function over time is not that it tells you everything. It’s that it tells you something different from the pages you already have, and that difference can prompt better questions for the people who can help answer them.

Can I still do what matters to me?

That question belongs to the whole story. No single page answers it.

Chapter Six: The One Resource You Can’t Buy Back

Here is a question worth sitting with: if you could add one resource to your future health, not a medication, a procedure, or a piece of equipment, what would you choose?

Most people reach first for something dramatic. The answer worth considering is smaller and easier to overlook: time.

Time makes many responses possible. A medication may need time to work, and rebuilding strength, mobility, or confidence often requires sustained effort. Even a decision as simple as walking a little more each week needs weeks in which those efforts can accumulate. Recovery, conditioning, adaptation, and the development of lasting habits rarely happen all at once.

Consider a fictional example from everyday life. A man in his seventies walks the same riverside loop with his dog most Saturdays. Over a few months he notices that the loop takes longer, and that he now needs a bench at the halfway point.

He starts a simple notebook. Each week he records the time, the distance, and where he stops to rest. When he compares this season with last, the pattern is clear: the same loop now takes about four minutes longer.

He does not yet know why. He considers new shoes, the summer heat, and a few poor nights of sleep. He also mentions the change at his next checkup, where his doctor examines his knee and checks his blood pressure before suggesting a few exercises to try for six weeks.

The notebook didn’t make him stronger. It gave him a clearer picture of what was changing, while there was still time to respond.

The story does not suggest that awareness guarantees a better outcome or identifies the cause of a change. It shows a pattern becoming visible, then being considered alongside a medical assessment as part of a decision.

Three stages are worth separating. Noticing comes first: a change becomes visible, and it might be an improvement, a decline, or a variation that deserves another look. Once it is visible, the next question is understanding: what might explain it, what might not, and whether it is an isolated observation or a pattern. Only then does action make sense, whether that means adjusting a routine, continuing something that appears helpful, or bringing the question to a professional who can evaluate it.

These stages do not always happen in a straight line. Sometimes noticing leads directly to a conversation. Sometimes an action helps us understand what was changing. And sometimes a professional assessment is needed before the meaning becomes clear. Sudden or serious changes may require prompt attention rather than waiting for a pattern to develop.

The value of recognizing a pattern is not that it guarantees an answer. It is that it may open the door to asking better questions and considering useful responses. Understanding where your function is heading cannot control the future. But it may give you more opportunity to use one of the resources every meaningful response requires.

Time.

Chapter Seven: Something to Watch the Minute Hand For You

Up until now, this book has asked you questions about your function.

What can you still do?

Where is your function heading?

Are you still becoming who you want to be, or are you slowly becoming someone else?

These are important questions, and they are hard ones. They require stepping back from your own life to see patterns that habit may have made difficult to notice. Most people don’t do that systematically on their own. It isn’t that they can’t. It’s that it doesn’t naturally occur to them while they are busy living.

Something has changed that makes the question easier to approach. Today, many of us carry devices that can record aspects of everyday movement. An iPhone, for example, can estimate walking speed, step length, and other mobility measurements under certain conditions. These measurements do not describe the entirety of physical function, but they offer one useful window into how a person moves.

The conditions matter. Some iPhone mobility measurements are collected when the phone is carried near the waist and the person walks steadily on relatively flat ground. Measurements may be unavailable during other activities or when the device is carried differently. The result is not a continuous recording of every step. It is a collection of observations taken during eligible periods of movement.

Over weeks and months, those observations may reveal patterns that are difficult to recognize from memory alone. A change in walking speed, for example, may become visible when repeated measurements are considered together. A walking speed that gradually changes over a season can be difficult to recognize day by day. Seen across time, the observations may reveal a direction worth considering.

But the pattern does not explain its own cause. It cannot tell you whether a change reflects pain, fatigue, illness, a different environment, altered habits, or a meaningful change in physical ability. That is the new possibility: not a minute hand moving in real time, but a record that may allow a pattern to appear, and a better starting point for a question.

Direction, while it is still developing, may be influenced. Repeated observations can help us notice where to look.

Chapter Eight: The Difference Between Data and Knowing

Marta’s father owned four devices that measured his health, and none of them had ever told him anything in a way he could use.

There was the watch that counted his steps, a number he glanced at most nights and forgot by morning. There was the scale that estimated his body composition in percentages he didn’t fully understand. There was the sleep app that gave him a cheerful score each morning, which he could never connect to how he actually felt. And there were the years of laboratory results in his medical chart, numbers his doctor reviewed once a year and usually called fine.

Marta had watched him collect these numbers for years. Whenever she asked what they meant, he usually shrugged. He had plenty of information, but little sense of what it told him about his everyday life.

Four sources of information. No moment of understanding.

This is one of the common problems of the health-technology boom. Collecting measurements has become easy. Turning them into something a person can understand and potentially act on has not. More information isn’t automatically more understanding. Information tells you a number. Understanding tells you what that number may mean in relation to others: last week’s, last month’s, and the pattern those numbers have traced over time.

Suppose walking-speed measurements from the past three months show a slight drop. That is information, and it might mean several things. It might reflect a real change in how fast someone walks. It might also reflect a recent illness, a different walking route, a change in daily routine, or a phone carried in a different pocket.

Before deciding what the change might mean, consider how variable the measurement is from day to day, whether it was collected under reasonably similar conditions, and what else changed during the same period. Understanding involves asking those questions. It doesn’t mean deciding the answer in advance, and it doesn’t mean treating two events that happened together as cause and effect. A measurement that changed the same month as a new medication may have nothing to do with the medication.

Three practices help. First, notice variability. A single difficult day is not a trend, and an unusually good day is not proof of recovery. Bodies vary. So do measurements.

Second, check consistency. Comparisons are usually more reliable when the conditions behind the measurements are similar. A walking speed recorded under one set of circumstances may not be directly comparable to a measurement collected under very different conditions.

Third, look for context. Sleep, illness, schedules, surroundings, pain, activity levels, and other circumstances can influence how we move. They belong in the picture.

Before deciding what a change means, ask: Is the pattern persistent? Are the measurements reasonably comparable? What else may have changed?

When understanding begins to develop, it can change how you feel about a number. A slow walk no longer has to stand alone as a verdict. A persistent pattern may become easier to recognize because today’s measurement is finally being compared with something meaningful. That context can calm unnecessary worry, and it can make a possible change easier to discuss with someone qualified to assess it.

Marta’s father didn’t necessarily need a fifth device. He needed a way to connect his disconnected information to an understandable story: where his function had been, where it seemed to be heading, what might explain the observations, and which questions were worth asking.

That is the difference between data and knowing. It is also the book’s central practical skill.

Chapter Nine: The Life on the Other Side of Function

Ask people plainly what they want, and the answers are rarely about performance numbers. Nobody wants a faster walking pace for its own sake. They want to walk through a city on a warm evening without wondering whether they can keep up with the group. Nobody dreams about stronger legs. They dream about getting down on the floor to help a grandchild with a puzzle, and getting back up without anyone noticing there was ever a question about it.

For most people, exercise is not really about exercise. It is about what exercise can help protect: the ability to say yes. Yes to the trip. Yes to the hike. Yes to carrying your own bags. Yes to a life that still asks something of you and lets you answer.

That ability to say yes is the subject of this book. Movement, strength, balance, and recovery are not destinations in themselves; they are part of the path toward something larger, the freedom to keep choosing how you live.

Independence is often misunderstood. It is easy to think of it as doing everything yourself, without help. But most people, at every age, rely on others and on their surroundings: a handrail, a cane, a shared car, a neighbor who checks in, a home designed for the way they live. Using these supports doesn’t end your independence. It can extend it. A person who uses a walker to get to the garden and back may enjoy far more autonomy than someone who stays home because stairs and distances have become too much to manage alone.

So the aim is not to avoid needing help. It is to keep the choices that matter to you, and to decide how to meet your needs on your own terms. Sometimes that means building strength. Sometimes it means changing the environment, asking for support, or accepting a tool that makes a task possible. Each of these is a legitimate way to remain the author of your own days.

Function deserves protection because it is part of the quiet foundation under every plan you’ve made for your future: the trip you’re saving for, the grandchild you want to keep up with, the independence you have spent a lifetime building.

Nothing can promise perfect health. No book, no tool, no score can promise that. What may be possible is something smaller, but meaningful: a clearer understanding of the changes taking place, and more opportunity to decide what, if anything, to do next.

Function can change quietly, its meaning becoming clear only in hindsight. We cannot see every change as it happens, but we may be able to recognize a pattern while there is still an opportunity to understand it and respond.

The destination was never a better score. It was the freedom to keep saying yes: to the trip, the floor, the stairs, the garden, and the ordinary life you still want to live on your own terms.

A Closing Note

When we started this book, the question was simple, and harder to answer than it sounds: how would we know?

We both have parents who live in other countries. Like many families, we have learned how hard it is to notice small changes from a distance. A phone call gives us a glimpse. A visit, once or twice a year, offers a snapshot. Together they tell us something, but they can leave much of the gradual change between those moments unseen. We wanted to know whether ordinary information about everyday movement could help make those changes easier to see over time.

We still do not think that question has a single answer. Changes in function can have many causes, some as ordinary as a new pair of shoes, a bad night’s sleep, or a month of rain. Others may deserve a conversation with a professional. What we hope the book offers is a clearer way to ask the question, and a better sense of when to ask someone else.

We hope you finish it thinking less about any tool and more about your own next ordinary day, and whether it is still moving the way you would choose.

The ordinary days between visits matter too.

Noticing Your Direction

A short guide for paying attention to your own function. It is not a test, and it does not replace an assessment by a professional.

Suggested Reading

For Readers Who Want to Learn More

The ideas in this book are connected to established work on healthy aging, physical function, and the role of our surroundings in what we are able to do. For readers who would like to explore these subjects further, the following free, publicly available resources offer clear explanations and practical examples. They are suggestions for further learning, not tests or tools for diagnosing changes in your own function.

World Health Organization (WHO) — Healthy ageing and functional ability

Explains the relationship between a person’s capabilities, their environment, and the activities that matter to them. A good companion to the discussion of function and participation.

https://www.who.int/news-room/questions-and-answers/item/healthy-ageing-and-functional-ability

National Institute on Aging (NIH) — Health Benefits of Exercise and Physical Activity

Describes how physical activity can support everyday tasks, independence, well-being, and healthy aging.

https://www.nia.nih.gov/health/exercise-and-physical-activity/health-benefits-exercise-and-physical-activity

Centers for Disease Control and Prevention (CDC) — Older Adult Activity: An Overview

A practical overview of aerobic activity, muscle strengthening, and balance activities, with examples suited to different abilities.

https://www.cdc.gov/physical-activity-basics/guidelines/older-adults.html

National Institute on Aging (NIH) — Three Types of Exercise Can Improve Your Health and Physical Ability

Explains aerobic, muscle-strengthening, and balance activities, including examples and basic safety advice.

https://www.nia.nih.gov/health/exercise-and-physical-activity/three-types-exercise-can-improve-your-health-and-physical

World Health Organization (WHO) — Age-friendly Environments

Shows how homes, transportation, communities, and social supports can make participation easier or harder.

https://www.who.int/teams/social-determinants-of-health/demographic-change-and-healthy-ageing/age-friendly-environments

These resources are provided for general education. They do not replace individualized advice or assessment from an appropriate healthcare professional.

About the Authors

Robert Dragan and Armin Loges are co-founders of FinchQ.

Like many families today, they and their spouses have parents who live far away, making it difficult to notice the small, gradual changes that can happen between visits.

This experience led them to a simple question: could everyday information help make those changes easier to see over time?

What began as a personal way to better understand the people they cared about gradually grew into something larger — a way of thinking they now hope will support their own future, and eventually their children’s.

Their answer to that question became FinchQ.

But more importantly, it reflected the central idea of this book: function changes over time, quietly. Seeing its direction more clearly may give people more time to understand, respond, and make choices on their own terms.

About FinchQ

We built FinchQ so that the changes you can’t see from inside your own life could become visible while there is still time to act on them.

FinchQ is an iPhone app. It works with the movement information your iPhone and Apple Health already hold. Apple Watch adds richer data when you have one, but it isn’t required. It shows how your function appears to be trending over weeks and months, not only how it looks today. It does not diagnose conditions or predict falls. Your health data stays with you, and you decide what to share and can change that at any time.

If you want to see where your own function is heading, you can learn more at www.iwantfinch.com. The question is still yours to answer.