Recovery period is prolonged, usually taking 24 hours or longer

Recovery period is prolonged, usually taking 24 hours or longer or prolonged recovery after exertion refers to the recovery time after over-exertion causes post-exertional malaise (PEM) or post-exertional symptom exacerbation. Symptoms caused by PEM do not stop when the over-exertion ends, even when the exertion may be minimal.