Exercising to relax is a bit like drinking coffee to fall asleep. It works…sometimes. But in many cases, your body sends out the red alert without you realizing it.
Because yes, physical activity can become your worst enemy if you don’t know what it provokes in you. And among the most pernicious effects: the increase in cortisol. This stress hormone, well known to insomniacs and burnouts, skyrockets during certain workouts. And you probably have no idea that your favorite sport is the cause.
Understand your cortisol, this hormone that your sport causes to flare up
When you play sports, your body reacts as if it had to flee from danger. It releases cortisol to mobilize energy, increase alertness, and boost your cardiovascular system. In itself, this is not bad. The problem is when this cortisol spike becomes chronic. And that’s exactly what happens with certain sports practices that you may consider relaxing or healthy.
The worst? The more you think you’re doing yourself good, the more your body finds itself on permanent alert. Result: persistent fatigue, disturbed sleep, sweet cravings, irritability… And this feeling that, despite your efforts, you never manage to “come down”.
These sports that stimulate your stress instead of calming it
Here is a non-exhaustive list of sports most likely to increase your cortisol levels significantly, especially if you practice them at high intensity, without sufficient recovery or in a competitive context:
- Intensive running: Running fast, for a long time, or with a performance objective, triggers a hormonal stress response comparable to that felt in a dangerous situation.
- HIIT (High Intensity Interval Training): Perfect for burning calories quickly, it can also exhaust your poorly regulated endocrine system.
- Combat sports: Boxing, MMA, jiu-jitsu… The intensity of the exchanges and the mental pressure in competition cause cortisol levels to explode.
- Crossfit: Do you chain reps with timing? Your body thinks you’re running away from a lion.
- Spinning or extreme cycling: Indoors, nightclub atmosphere, loud music, unbearable pace: your brain doesn’t really have the time to integrate that it’s for your good.
But be careful, it’s not the sport itself that is toxic. It’s the lack of balance. An intense activity, repeated without recovery, perceived as a constraint or associated with a quest for permanent performance… this is the real source of stress.
How do you know if your sport exhausts you more than it recharges you?
You do your favorite sport, you finish dripping, with the feeling of having given everything. It’s good. But how does your body really experience it? Here are some signals to watch for:
- You wake up tired despite 8 hours of sleep.
- You often crave something sweet right after exercise.
- You lose performance instead of progress.
- You have difficulty recovering between sessions.
- You are irritable, anxious or you sleep poorly.
If several of these symptoms resonate with you, it’s time to rethink your approach. Your goal should be to alternate intensity and gentleness, and above all to listen to your inner state rather than your activity tracker.
Simple solutions to preserve your hormonal balance
Good news: it’s not about stopping all sport. It’s about practicing it differently, in full awareness of its effects. To keep a good level of shape without burning yourself out from the inside:
- Reduce the frequency of very intense sessions.
- Add gentle practices like walking, yoga or slow swimming.
- Favoring well-being objectives rather than performance.
- Respect your sleep and recovery cycles.
- Listen to your body: if you are exhausted, now is not the time to push yourself.
Your sport should do you good. Don’t anesthetize yourself with endorphins or mask deeper stress. Cortisol is useful, but only when it is in the right dosage. And this dosage, only you can find it, listening to what your body whispers to you, and sometimes… screams at you.
FAQ: sport and cortisol
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What sports naturally increase cortisol levels?
Very intense sports like HIIT, running or crossfit naturally raise cortisol levels in the body.
How do I know if my sport is generating too much stress?
Signs like chronic fatigue, insomnia or decreased performance indicate excess exercise-related stress.
Does running increase cortisol?
Yes, running at high intensity or for long periods of time greatly increases cortisol production.
What sports to practice to lower cortisol?
Activities like yoga, slow walking, gentle swimming or tai chi help lower cortisol.
Can sports stress prevent weight loss?
Yes, chronically elevated cortisol blocks lipolysis and can prevent weight loss despite sustained physical activity.
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Signs like chronic fatigue, insomnia or decreased performance indicate excess exercise-related stress.
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“`
Photo credit: @shutterstock
