Are You Over-Exercising in Midlife? Why More Can Backfire

Let me start with the sentence I wish someone had said to me sooner.

You can train harder than you ever have in your life and end up with more belly fat, not less. I've watched it happen to so many women in their 40s and 50s, and almost always to the ones putting in the most effort.

If you've been wondering why exercise is harder in perimenopause, why the thing that used to work now does nothing, or why your tummy has got softer despite five sweaty classes a week… you are not lazy, you are not broken, and you are very probably doing too much.

I know that's not what you've been told. The message everywhere is "push harder, sweat more, earn it". So let me explain, the way I would if you were sat across from me with a cup of tea, why that advice quietly backfires in midlife, and what to do instead.

Why exercise feels harder in perimenopause

First, let's deal with the thing nobody warns you about.

Exercise genuinely does get harder in perimenopause, and it's not in your head. As your oestrogen starts to swing and then fall, a few things shift at once. You recover more slowly between sessions. Sleep gets patchier, so you turn up tired. Your muscles take longer to bounce back, and the same class that used to leave you buzzing now leaves you wiped out for two days.

So the workout that felt fine at 38 can feel brutal at 48, even though you're working just as hard. That's the honest reason "why is exercise harder in perimenopause" is one of the most-asked questions out there. Your body hasn't given up on you. The rules have changed.

Here's the trap, though. When something stops working, our instinct is to do more of it. More classes. More cardio. Longer sessions. Eat a bit less on top. And in midlife, that instinct is exactly the wrong one.

When more exercise becomes too much

Exercise is a stress on the body. A good stress, usually. You push, your body adapts, you come back stronger. That's the whole point.

But adaptation only happens during recovery, not during the workout itself. And in midlife your recovery is already stretched thin, by broken sleep, by busy lives, by hormones in flux. Pile relentless high-intensity training on top of an already maxed-out system and the sums stop adding up. You're constantly breaking yourself down and never quite building back.

The middleman in all of this is cortisol, your main stress hormone. A bit of it is healthy and completely normal. The problem is when it stays high day after day, because your body can't tell the difference between "I did a hard HIIT class on no sleep" and "I'm under genuine threat". It just reads stress, and it responds to stress.

When you were younger, with more oestrogen and deeper sleep, you had more buffer. You could absorb the punishment. In perimenopause and menopause that buffer shrinks, so the same training load that once made you leaner can now tip you into chronically stressed, chronically tired, and chronically inflamed.

More effort isn't the answer when effort is the thing wearing you down. Sometimes the bravest change in midlife is to do less, on purpose.

How over-training makes belly fat worse

Now to the bit that feels so unfair.

Chronically high cortisol is one of the things that nudges your body to store fat around your middle, specifically. So the irony is brutal: the harder you grind in an attempt to shift your tummy, the more you can signal to your body to hold on to it. I've written about the wider picture in my guide on how to lose "meno belly" after 40, and over-exercising is one of the most common reasons it won't budge.

It doesn't stop there. When you're constantly running on empty:

Your appetite goes haywire. Too much training plus too little food and sleep cranks up hunger and cravings, usually for sugar and carbs in the late afternoon. That's not weak willpower. That's a tired body shouting for fuel.

You lose muscle, not fat. Endless cardio on low energy can actually eat into the muscle you're trying to protect. And muscle is the very thing that keeps your metabolism ticking over in midlife. Lose it, and the whole picture gets harder.

You move less the rest of the day. Smash yourself in a 6am class and you'll often spend the rest of the day shattered on the sofa. All those everyday steps quietly disappear, and they matter more than one heroic session ever did.

So you end up working harder, eating less, sleeping worse, and feeling utterly defeated when nothing changes. The effort was never the problem. The plan was.

Signs you're overdoing it

This isn't about scaring you off exercise, far from it. Movement is one of the best things you can do in midlife. It's about spotting when the dial has crept too far. Read this list honestly:

You're exhausted rather than energised after training. You dread your sessions instead of looking forward to them. You're getting every cold going. You're sore for days. Your sleep is getting worse, not better. Your cravings are out of control. You're training hard and eating carefully, and the belly fat is staying put or creeping up. And that low, wired, "tired but can't switch off" feeling has become normal.

If you nodded along to several of those, please hear me: this is a sign to recover, not a sign to push harder. Your body isn't being difficult. It's asking you for something different.

What to do instead

Right. The good news, and it's genuinely freeing once it lands. A calmer plan works better in midlife than a punishing one. Here's where I'd point your energy.

Make strength training the centre of it. If you take one thing from this whole post, make it this. Lifting weights, two or three times a week, builds the muscle that protects your metabolism and changes your shape, and it does it without hammering your stress system the way endless cardio does. It is, hands down, the most valuable thing you can do for your body right now. I've written a full guide to strength training for women over 40 if you want the why behind it.

Walk. A lot. Don't underestimate this. Daily walks burn fat, lower cortisol rather than raise it, and keep you moving without draining you. A brisk daily walk does more for a midlife body than a fifth frantic spin class ever will, and it's far kinder to your joints and your sanity.

Keep high-intensity to a sprinkle. I'm not banning it. A short, sharp session once or twice a week is great, and it can be brilliant fun. The problem is only ever too much of it. Think of HIIT as the seasoning, not the meal.

Treat recovery as part of training, not a reward for it. Sleep, rest days, eating enough protein, taking the foot off the gas when life is stressful, all of that is where the results are actually made. Recovery isn't slacking. It's the half of the equation everyone forgets.

Eat enough to support it. You cannot train hard, recover well and build muscle while half-starving yourself. Under-eating is just another stress piled onto a stressed system. Build your meals around protein, and stop treating food like the enemy.

I see this turn around all the time. Women come in convinced the answer is to punish themselves harder, and the first thing we usually do is take a couple of those frantic cardio sessions away and swap them for strength and walking. Within a few weeks they're sleeping better, the cravings settle, and the body that wouldn't shift on six classes a week finally starts to change on three sensible ones. Less, done properly, almost always wins.

If you'd like the bigger picture of how to move through these years, my guide to exercise in perimenopause pulls all of this together into a realistic weekly shape.

Honestly, this is good news

Here's the honest bit.

If you've been grinding yourself into the ground and getting nowhere, I know how disheartening that is. But the takeaway here isn't "you've been doing it wrong". It's that you've been doing too much of the wrong thing, and the fix is genuinely kinder than what you've been putting yourself through.

Less frantic cardio. More strength. More walking. More sleep. More food, not less. That's a plan you can actually live inside, week after week, without burning out, and it's the one that quietly reshapes a midlife body.

The hard part isn't the training. It's trusting that doing less, done well, beats doing more, done desperately. That's the bit we help women with every single day, and it's usually the moment everything starts to change. 💜

Quick honest note: this is general advice from a coach, written to help you understand your body, not medical advice. Menopause is different for every woman. If you've got health concerns, or you're thinking about HRT or supplements like creatine, please have a chat with your GP or pharmacist first.