Health Claims

When Paralympic athletes don’t eat enough to fuel their training, their hormones get thrown off, which weakens their bones and makes them more likely to get stress fractures.

Paralympic athletes who train too much without enough rest or fuel might be more likely to get stress injuries in their bones, especially if they do endurance sports like racing or long-distance...

There's no single blood test or clear sign that doctors can use to diagnose overtraining. Instead, they rely on a mix of how you feel (like mood and fatigue) and lab tests (like hormones and...

Women athletes are more likely to get overtrained or develop stress fractures because of hormone changes during their cycle and a higher chance of not eating enough to fuel their training.

Too much training can cause long-term inflammation, which may weaken bones by speeding up the breakdown of bone tissue, increasing the risk of stress fractures.

When athletes don’t eat enough to fuel their training, their bodies can’t recover properly, which raises the risk of burnout and stress fractures—especially because hormones that keep bones strong...

Athletes with overtraining syndrome often have imbalanced hormones—like low testosterone and high estrogen—which can make them feel tired and perform worse. These hormone changes are part of the...

Nine simple check-ins about mood, eating, and how you're feeling during workouts can tell if a male athlete is overtrained — no blood tests or fancy machines needed.

When male athletes are overtrained, their body’s stress and growth hormone responses to low blood sugar don’t react as strongly—this could mean their brain’s hormone control center isn’t working...

If a male athlete scores more than 8 on the fatigue part of this mood test, it strongly suggests they have overtraining syndrome, not just normal tiredness from training.

Male athletes who eat fewer than 32 calories per pound of body weight per day are very likely to have overtraining syndrome, based on this study.

For male athletes who train hard, checking a mix of things like mood, diet, body fat, and hormone reactions might be a better way to spot overtraining than just looking at one blood test.

If you're under a lot of long-term stress, your muscles might not bounce back as well after a tough workout, and you might feel more tired and sore than usual.

If you slowly increase your workout volume over time, your body adapts and you're less likely to get overly tired or burned out compared to jumping into intense workouts all at once.

Not eating enough calories can make you feel like you're overtraining, but you can still overtrain even if you're eating enough food and protein.

People with more fast-twitch muscles or who are older may bounce back slower after workouts and are more likely to get overtrained than younger people or those with more slow-twitch muscles.

Your muscles get used to tough workouts over time, so they hurt less and recover faster the more you do them.

If you suddenly do really intense stretching-type workouts that your muscles aren't used to, it can seriously damage them — so much that the muscles actually get smaller for a few weeks.

There's no blood test or body signal that reliably shows when someone is overtrained — the best way to tell is by how long it takes their performance to bounce back.

Overtraining that really messes you up is super rare — most people don’t train hard or long enough to actually hit that point.

When athletes push too hard, their performance might dip at first — but if it's 'functional' overreaching, they bounce back stronger. If it's 'non-functional,' they stay weak even after resting.

If you train too much, your performance can drop and stay low for months — and even after you recover, you won’t get any stronger or faster.

If you're a young adult who lifts weights, feeling stressed over time might slow down your muscle recovery—and this seems to be true whether we measure stress by how you feel or by big life events...

If you're a young adult who lifts weights, being stressed out doesn't seem to slow down how quickly your leg power comes back after a tough workout — at least when it comes to exercises that aren't...