Why you lose power faster than strength after 35

Adults lose power years before they lose strength, and they lose it quietly. Power is how fast you can produce force: jumping, sprinting, catching yourself, changing direction. Nothing in ordinary adult life trains it, almost no training program includes it, and unlike strength, its decline doesn't announce itself with a falling number. It announces itself the day your body won't do something it always did. I watched it happen to one of the most athletic people I train, and the story explains both why it happens and why it matters far beyond the gym.

Teresa

Teresa had been training with me for a few months. Forty. Two kids. An athlete her whole life: running, CrossFit, name a sport and she'd done it well. Not weekend good. Towel pull ups good.

Then life happened the way it does. Two kids, work, a travelling husband, years where training wasn't the priority. That's not a failure. That's life.

So she came to me and we got to work on strength and fat loss, and it was going well. She was getting stronger. Things were moving.

Then one day she came in shaken. She'd been in the backyard with her five year old son. He wanted to skip. Just skip, the way kids do.

And she couldn't do it. Her body wouldn't produce the movement. The step, the hop, the little bit of spring it takes. It wasn't there. She sat there describing the athlete she used to be, and I could hear the disbelief in her voice. How does someone that capable end up unable to skip in her own backyard?

Here's the part that matters. Teresa wasn't weak. She deadlifts 240 for reps. The thing she'd lost wasn't strength. It was power. The fast stuff. The spring. The ability to produce force quickly instead of just producing a lot of it.

And I'll be honest: we weren't training it either. We were doing what most people do. Get strong, lose fat, assume everything else follows. Except that part doesn't follow. It has to be trained on purpose.

The mechanism: why power goes first and quietest

Think of training as four qualities. Strength: how much force you can produce. Power: how fast you can produce it. Engine: how long you can work and how fast you recover. Durability: whether you can keep doing all of it for decades without breaking down.

Most adults train one of these, maybe two. They lift, and that's it. Or they run, and that's it. Almost nobody trains power, for three understandable reasons: it's not in most programs, it doesn't feel like hard work, and it doesn't make you sore. There's no obvious number to chase, so there's no obvious number to watch fall.

Meanwhile everyday life gives your strength a little work: you carry groceries, you pick up kids, you move furniture. Nothing in adult life asks you to be fast. So the fast qualities sit unused for fifteen years, and fast is precisely what the body stops maintaining when it goes unasked.

The symptom isn't a number going down. People describe it the same way every time: "I don't trust my body anymore." A guy in his forties who squats fine but won't chase his kid in the yard. Someone who played soccer every weekend and now avoids the pickup game because they're scared of getting hurt. Waking up stiff without quite knowing when that started. That quiet distrust is what losing power feels like from the inside.

Why this is bigger than sport

When people talk about staying healthy into their seventies and eighties, the conversation is usually about disease. A huge part of it is more basic: whether you fall.

And whether you fall doesn't come down to how strong you are. It comes down to whether your body reacts fast enough to catch itself. A stumble on a curb. A foot that lands wrong. The split second where you either recover or you don't. That's power.

The same quality that lets a forty year old skip with her son is the quality that keeps a seventy five year old on her feet. And it isn't a quality you pick up at seventy. You keep it, or you lose it.

What happened with Teresa, and the test for you

We added power work immediately. Nothing exotic: jumps, throws, fast light intentional work alongside the strength she was already building. Her body responded faster than I expected.

And the change I noticed wasn't in any number. She started trusting herself again. Moving like someone who wasn't bracing. Trying things in the gym she wouldn't have touched a few months earlier. Most people think they're losing strength as they age. Usually they're losing everything else first, and strength is just the last one they notice.

The test this week takes two minutes: go skip. Twenty meters, in the yard or the park. If it's there, springy and easy, good. Keep it. If your body hesitates, or the movement comes out flat and careful, you've just met the quality you stopped training. The next article shows you exactly how to get it back.