The symptoms of soreness in the thighs should not continue running, because the symptoms of soreness are caused by acute injury to the thigh muscles, chronic strain or local fasciitis in the thighs, plus the stimulation of inflammation and local swelling, and the muscle metabolites cannot be excreted in time, resulting in the accumulation of metabolites, such as creatine and lactic acid to stimulate the local area, which will also produce the symptoms of soreness. Continue to run to aggravate the injury, strain, while local blood circulation is more restricted, metabolites continue to be unable to excrete, inflammation can not be dissipated as soon as possible, will aggravate the local injury, strain and muscle injury, resulting in symptoms for a long time to delay, serious consequences. The symptoms of soreness in the thighs must be rested and dealt with accordingly, until the symptoms disappear completely, and then continue to resume running training in a gradual manner.