How can you tell when you are not recovering well from training?

Understanding the question

Under-recovery is suggested by a persistent pattern rather than one symptom or a single disappointing workout. Repeated performance declines, unusually high effort for familiar work, disturbed sleep, ongoing soreness and reduced motivation can be useful warning signs, but they are nonspecific. Illness, low energy availability, stress and medical conditions can produce similar changes. Begin by reviewing the workload and recent life demands, then reduce training stress when appropriate. If symptoms are substantial, prolonged or unexplained, seek assessment. Overtraining syndrome is a clinical and exclusion-based problem, not a diagnosis that a watch, resting heart rate or online checklist can establish by itself.

What a useful investigation needs to consider

Normal fatigue after a hard block is different from prolonged impairment. Short-term planned overload can be followed by recovery, but repeated deterioration is not evidence that the programme is working better or that you should push through.

No single biomarker reliably diagnoses every recovery problem. Changes in heart rate, mood or sleep should be interpreted as context alongside symptoms and performance. Persistent exhaustion or exercise intolerance deserves attention beyond adding another recovery tool.

Read the detailed explanation

The companion article explores recognising under-recovery in more depth, with topic-specific explanations and source material.