DOMS

DOMS. Delayed Onset Muscle Soreness is the stiffness, swelling and pain typically felt 24 to 72 hours after exercising and subsides within 2 to 3 days. DOMS is quite common if you are beginning an exercise program or are new to a physical activity. Recent research suggests that DOMS is caused by tiny rips in muscle fiber caused by unaccustomed training levels.
More Health and Fitness