THE #1 MUSCLE GROUP YOU SHOULD BE STRETCHING, BUT AREN'T. Find out what muscle it is and why you



Your hip flexors play an important role in your daily activities, posture and workouts, if not stretched properly and regularly, they will cause you a great deal of discomfort and even pain. The chief symptom of a strained or torn hip flexor is pain in the area at the front of your hip where it meets your thigh.