Overtraining: the signs you're doing too much

True overtraining — the medical syndrome, the one that takes months to repair — is rare. What's common is the stage before it: uncompensated overreaching, when you stack workouts faster than your body can absorb them. The good news: it gives you warning. The bad news: its signals look like a “motivation dip,” and many people respond by training more. That's exactly the opposite of what you should do.

Sports medicine distinguishes three stages. According to a 2012 review, about 60% of elite runners have gone through the second at least once (33% of non-elite female runners); the third appears to be extremely rare.

What are the signs of overtraining?

None of them is enough on its own. Three or four at the same time, for more than a week, is.

• Your performance stalls or drops despite consistent training — the cardinal sign. The same weights feel heavier to move, your usual paces start to sting.
• Your heart rate acts strangely: resting heart rate above your normal several mornings in a row, HRV that drops off over a week (how to read your HRV), or an unusually high heart rate on easy efforts. Clues, not proof: according to a 2016 meta-analysis (24 studies), resting HRV often changes very little with overreaching.
• Your sleep gets worse even though you're exhausted — the classic paradox of an overactivated nervous system: trouble falling asleep, waking up at 4 a.m.
• The drive disappears. Not a one-day slump: losing your appetite for workouts you used to love, irritability, a mood sliding slowly downhill.
• You keep getting sick — one cold after another, a small cut that won't heal, soreness that lingers far longer than usual. According to the International Olympic Committee (2016), poorly managed load, psychological stress included, raises the risk of infection.

Why overtraining happens (even if you don't train “that much”)

Overreaching isn't about absolute volume: it's an imbalance between the load you impose and the recovery you provide. The 2013 joint European and American sports medicine consensus sums it up: progress requires overload, but never excessive overload without adequate recovery. Six workouts a week with 8 hours of sleep, a full plate and little stress go down just fine. Four workouts with 6 hours of sleep, an aggressive calorie deficit and a high-pressure job are enough to put you in the red. Life stress goes in the same column as your workouts — your nervous system can't tell the difference.

What to do if you're overtrained: a simple protocol

• Week 1: cut it in half. Keep your usual frequency if it matters to you, but halve volume and intensity. Walking, mobility, light technique work.
• Sleep. Aim for the top of your range (your real sleep need is here), go to bed earlier, keep fixed hours.
• Eat at maintenance, at the very least. This isn't the week for a deficit: the 2013 consensus lists calorie restriction among the causes to rule out.
• Reassess on day 7: resting heart rate back to normal, you want to train again, sleep restored → ramp back up gradually. If not, take another easy week — and if nothing changes after 3–4 weeks, see a doctor.

Key takeaways

• Overreaching gives warning: dropping performance + worse vitals + broken sleep + vanished drive.
• The cause is never “too much exercise” alone: it's your total load (training + life) against your recovery.
• The answer is always the same: less intensity, more sleep, enough calories — for at least one week.