Rethinking Muscle Soreness: New Evidence Emphasizes Safe, Sustainable Fitness for Thai Readers
New medical research and expert consensus debunk long-running myths about muscle soreness after exercise. For Thai readers, the message is clear: soreness is not required for progress, and pushing through pain can hinder gains. Contemporary science shows that delayed onset muscle soreness (DOMS) does not signal a successful workout or necessary adaptation.
DOMS typically emerges 12 to 24 hours after unfamiliar or strenuous activity, peaking between 24 and 72 hours, and then fading. The old belief that lactic acid buildup causes next-day soreness has been debunked. A clinical assistant professor at a leading US university notes that lactic acid is cleared within an hour after exercise and is not responsible for subsequent muscle ache. Instead, microtrauma in muscle fibers from new or intensified movements triggers a temporary inflammatory response that explains the discomfort.
