What Is Delayed Onset Muscle
Soreness (DOMS)?

Delayed Onset Muscle Soreness (DOMS) refers to discomfort often felt 24 to 72 hours after exercising, which usually subsides within two to three days. The discomfort is caused by tiny tears in the muscle fiber and/or by training at a higher intensity or volume than usual. It was commonly thought to be caused by increased lactate concentrations; however, this concept has been disproved as research shows elevated levels of lactic acid rarely persist after an hour of rest. DOMS is more commonly thought to be caused by the muscle trauma caused during high intensity training or weight lifting.