Pain in the upper thigh below hip, rigidness in leg with trembling post exercise. Alarming?
Hi, when i go to taekwondo my left upper thigh just below the hip hurts after I exercise, not while I exercise. It would come right after I kick a few times and it comes In short lasting sharp pains. It would hurt for a while after class but stop hurting 30 minutes later. When the pain starts my whole leg becomes rigid and sometimes It shakes. Is this a serious problem?