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Overtraining symptoms: the signs you're not recovering
Hard training only works if you recover from it. When training stress keeps outrunning recovery, the body stops adapting and starts breaking down. Here's how to recognise the warning signs early, while a few easier days are still enough to fix it.
General information, not medical advice. For an injury, or pain that is severe or not improving, see a doctor or physiotherapist.
The most common overtraining symptoms are fatigue that doesn't go away with rest, performance that stalls or drops, poor sleep, low mood or irritability, loss of motivation, soreness that lingers, and getting ill more often. Caught early (overreaching), a few days to weeks of lighter training usually fixes it. Full overtraining syndrome can take months to recover from, so see a doctor if the signs last.[1]
10 warning signs
These signs are described in the 2013 ECSS/ACSM consensus on overtraining, which also notes that no single test can reliably diagnose it.[1] One bad session isn't overtraining. Look for several of these signs together, lasting for more than a week or two.
Overreaching vs overtraining
Pushing hard for a short block and feeling wrecked is normal, as long as you bounce back after a few easier days and come back stronger. That's planned. The problem starts when the tiredness doesn't lift, and you keep pushing anyway.
The 2013 European College of Sport Science and American College of Sports Medicine consensus describes a spectrum. Functional overreaching is a short-term drop in performance that leads to improvement after recovery. Non-functional overreaching follows when the balance between training and recovery isn't respected. Overtraining syndrome is a prolonged maladaptation of several biological, neurochemical and hormonal systems. Telling the last two apart is difficult and depends on how long recovery takes.[1]
What causes it
It's not just training. Your body has one stress budget. Hard training, bad sleep, a stressful job or exams, not eating enough and illness all draw from the same account. Overspend for long enough and you run out.
The core cause is an imbalance between training load and recovery. The consensus also highlights contributing factors: not eating enough energy (negative energy balance), too little carbohydrate or protein, iron deficiency, and non-training stress. It recommends ruling out other medical causes, such as infections and other illnesses, before calling it overtraining.[1]
What to do if you recognise the signs
- Back off now. Swap hard sessions for easy ones or rest days. A few days to two weeks is often enough when it's caught early.
- Prioritise sleep. Aim for a regular routine and enough hours every night. Short sleep is linked to more sports injuries.[2]
- Eat enough. Especially carbohydrate and protein, matched to how much you train. Low energy and carbohydrate intake are listed as contributing factors.[1]
- Reduce other stress where you can.
- Return gradually. Build back up slowly instead of jumping straight to your old load.
- See a doctor if the signs last more than a couple of weeks of reduced training. They can check for other causes such as illness, iron deficiency or not eating enough.[1]
The full step-by-step recovery plan →
How to prevent it
- Increase load gradually rather than in big jumps.
- Follow hard days with easy days, and plan regular lighter weeks.
- Use active recovery and rest days instead of training hard every day.
- Keep a simple log of sleep, mood, soreness and how sessions feel. Trends show up before performance drops.
- Look after the basics: sleep, food and life stress count as much as the training itself.
Where cooling fits
Cooling can make heavy training blocks feel more manageable, easing soreness so you're fresher for the next session. It can't fix an imbalance between training and recovery. If you're showing the signs above, the answer is less training and more rest, not more recovery gadgets.
Questions
What are the symptoms of overtraining?
Common signs are fatigue that doesn't improve with rest, falling performance, poor sleep, low mood or irritability, loss of motivation, lingering soreness, frequent illness, appetite or weight changes, more niggles and injuries, and poor concentration.
How long does it take to recover from overtraining?
Short-term overreaching usually resolves within days to weeks of lighter training. Non-functional overreaching can take weeks to months. Overtraining syndrome can take months or longer.
What is the difference between overreaching and overtraining?
Functional overreaching is a short, planned period of heavy training that leads to improvement after recovery. Overtraining syndrome is a prolonged maladaptation where performance and wellbeing stay down for months, even with rest.
Can you overtrain from lifting weights?
Yes. Any type of training can lead to overreaching or overtraining if load increases faster than you can recover, especially combined with poor sleep, not eating enough and other life stress.
When should I see a doctor?
If fatigue, poor performance or low mood last more than a couple of weeks after reducing training, or if you have other symptoms such as weight loss or frequent illness. A doctor can rule out other causes such as infection or iron deficiency.
References
- Meeusen R, Duclos M, Foster C, et al. Prevention, diagnosis, and treatment of the overtraining syndrome (ECSS/ACSM joint consensus). Medicine & Science in Sports & Exercise, 2013. doi.org/10.1249/MSS.0b013e318279a10a
- Milewski MD, Skaggs DL, Bishop GA, et al. Chronic lack of sleep is associated with increased sports injuries in adolescent athletes. Journal of Pediatric Orthopaedics, 2014. doi.org/10.1097/BPO.0000000000000151
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