Signs of overtraining — what your Apple Watch can show
Short answer: Early signs of overreaching include HRV staying below your normal for several days, a resting heart rate a few beats higher, worse sleep, heavy legs, low motivation and stalled performance. Reduce intensity and volume for a few days and prioritise sleep. If symptoms persist for weeks, or you feel unwell, see a doctor.
Warning signs
In your data
- HRV below your normal for 3+ days in a row
- Resting heart rate 3–5+ bpm above your normal
- Worse sleep despite enough time in bed
- Exertion consistently above your target range
How you feel
- Heavy legs, unusual soreness
- Low motivation, irritability
- Workouts feel harder at the same pace
- Getting ill more often
Functional overreaching vs overtraining
A short block of hard training that dips your numbers is normal. If performance rebounds after a lighter week, that’s functional overreaching. When fatigue and poor performance last weeks to months despite rest, that’s the overtraining syndrome (Meeusen et al., 2013), which needs medical input.
What to do
- Cut intensity first: swap intervals for easy aerobic work.
- Cut volume by about 30–50% for several days.
- Sleep more: pay down sleep debt.
- Check other stresses: work, travel, alcohol, illness.
- Return gradually once HRV and resting heart rate are back near normal.
How Pulse Coach helps
Your recovery score and exertion target adjust every morning. Turn on rest mode when you’re run down, and every recommendation switches to recovery until you turn it off.
Questions people also ask
What's the difference between overreaching and overtraining?
Overreaching is short-term fatigue that resolves with a few days to two weeks of lighter training. Overtraining syndrome is a longer-lasting state that can take months to recover from (Meeusen et al., 2013).
Can HRV alone tell me I'm overtrained?
No. HRV is one useful signal alongside resting heart rate, sleep, mood and performance. Persistent fatigue has many possible causes, so talk to a doctor if it doesn't improve.
Sources
Not medical advice. This article is general information about wellness metrics. It is not a diagnosis or a substitute for professional care. If a reading worries you, or you feel unwell, talk to a doctor.