Fitness Is Something You Maintain

Almost everything we say about fitness uses a verb. People are getting back into it, starting a program, doing a challenge, falling off, getting back on. I’ve said all of those myself, and I run a business people sign up for, so I’m not pretending to stand outside this language. But it carries an assumption I’ve come to think is backwards; it treats fitness as something you do in blocks with a start date and an end date, when it’s closer to something you are at any given moment and have to keep up.

That distinction sounds like semantics until you look at what the body actually keeps track of. It has no record of which program you finished or how many challenges you completed. What it holds onto is whatever capacities you’ve asked of it recently, and it quietly lets go of the rest.

What You Have at Any Given Moment

If fitness is something you are, then it needs a definition that describes a state rather than an activity. The one I use in coaching is an inventory. How much range can each joint reach, and how much of that range can you control? How much force can you produce, and how much can you absorb? How long can you keep working before you have to stop? And how well do all of those organize into the things a body was built to do, which is walk, run, jump, throw, carry, and get up off the floor?

Each item on that list has a current level, and each one drifts toward what your life asks of it. Mobility sits inside that inventory rather than beside it (I laid out how I define it in What Is Mobility?), and so do strength and conditioning. A program is one way to push those levels up. Maintenance is what keeps them from sliding back down when the program ends, and most people never plan for that part at all.

Everything Drifts Toward What You Use

Specificity of adaptation is usually taught as a reason to train the thing you want to get better at. It runs in the other direction too. Tissue and the nervous system adapt to the demands they get, and when a demand disappears, the capacity built for it goes with it, slowly and without announcing itself.

Hip internal rotation is the cleanest example I know. Sitting puts the hip somewhere between neutral and external rotation for most of the day, and nothing about that position asks the femur to turn the other way, so the range fades without pain or any obvious signal. Most people only find out it’s gone when someone tests it, which I went into in Hip Internal Rotation: The Range Most People Lose. Nobody stopped a program there. The range just stopped being used.

The encouraging part is that keeping a capacity looks far cheaper than building it. A review on the minimal dose of exercise needed to preserve performance found that strength and muscle size could be held for up to 32 weeks with as little as one strength session and one set per exercise each week, as long as the relative load stayed high, while older adults needed closer to two sessions and two to three sets to hold muscle size (1). Endurance held for up to 15 weeks with as few as two sessions a week, again as long as intensity was maintained. The authors’ main conclusion was that intensity is the variable that matters most, and that frequency and volume can drop a long way before performance follows. They also note that holding onto VO2 max isn’t the same as holding onto the ability to work for hours, so “maintained” depends on which capacity you mean.

I haven’t found anything as clean for range of motion, so I’ll cap this part at what I’ve seen coaching. Joint range seems to behave the same way: range you visit regularly, under some tension and with control, tends to stay, and range you never visit drifts. That’s the job CARs were built for, which is why I think of them as a maintenance and assessment tool rather than a way to build new range (What CARs Are Actually For goes into that). They don’t add much. They tell you what you still have and give the body a reason to keep it.

The Goalpost Moved and the Training Didn’t

Most people training today aren’t preparing for a fight, a season, or a meet. They’re training to stay healthy and capable for as long as possible, and longevity has become the stated goal for nearly everyone in the conversation. That’s a real shift. What’s strange is that the dominant model of training hasn’t moved with it. Fitness still gets measured mostly by gym lifts, and function still gets defined as squat, deadlift, and push-up.

Those lifts are part of how you express movement, and I’m not arguing against them. But they aren’t the foundation. How well a hip rotates is foundational. How well the trunk and hips organize to move you forward is foundational. The body was built to throw, walk, run, and jump, and a lot of people who can deadlift respectably can’t run without something hurting or getting winded in a few minutes. Conditioning is the area I know least about, so take this as a coach’s observation rather than a researcher’s: the strength world in particular tends to be more deconditioned than it realizes, and conditioning gets treated as optional when it probably belongs in every program built around staying alive and capable.

The way I handle this myself is to decide which capacities I’d mind losing and train those on purpose. Squat strength matters to me. My ability to kick matters to me more, so I do kickboxing. Kickboxing is my answer, and it probably won’t be yours. The part worth borrowing is the question underneath it, which is what you need your body to keep doing.

There’s a tension here I should be honest about. An industry that still trains the gym instead of the body is good for me as a gym owner, because it gives a studio that thinks differently something to stand on. I’d also like the industry to catch up. I don’t think those cancel each other out.

What Maintenance Looks Like in Practice

Thinking in terms of maintenance changes the order of operations. The first step is taking inventory, and that means testing instead of guessing. Check the joint ranges you care about and how much of each you control. Check what you can lift, how long you can work, and how well you can run, jump, and change direction. You can’t maintain something you haven’t measured, and the drift is quiet enough that most people overestimate what they still have.

The second step is choosing what you’d mind losing. Nobody can keep every capacity at a high level, and pretending otherwise is how programs get bloated and abandoned. Someone who wants to play with their kids on the floor, keep running, and stay strong enough to move furniture has a different list than someone training for a competition, and the list should be theirs rather than whatever a program assumed.

The third step is finding the floor for each item: the smallest dose that keeps it where it is, with intensity held. For strength, the research above suggests that floor is lower than most people think, at least for younger trainees. For joint range, it might be a few minutes of controlled work in the positions you’d otherwise never visit. For conditioning, it’s some regular work hard enough to count. Phases of building can sit on top of that floor, and when life gets in the way (it will), the floor is what you protect.

Where the Program Frame Still Earns Its Place

The verb-based way of thinking about fitness isn’t useless, and I’d be misrepresenting my own job if I said it was. Programs give people structure, a clear starting point, and progress they can see. Building a capacity requires progressive overload, and overload is easier to organize in blocks with goals and dates attached. Athletes need to peak for specific events. And for a lot of people, a challenge with a finish line is what gets them in the door in the first place; adherence matters more than elegance, because the best plan does nothing if it never happens.

What the program frame leaves out is the space between programs, which is where most people spend most of their lives. If fitness only exists while you’re “doing” something, then every gap is a loss, and every restart begins further back than the last one.

The question I find more useful than “what program are you on” is what you’d still be able to do if you trained half as much for the next six months. Most people have never thought about it, because the program frame never asks. Your body is answering it every week anyway, with or without your input.

References

1. Spiering, B. A., Mujika, I., Sharp, M. A., & Foulis, S. A. (2021). Maintaining Physical Performance: The Minimal Dose of Exercise Needed to Preserve Endurance and Strength Over Time. Journal of Strength and Conditioning Research, 35(5), 1449-1458. Link