These issues tend to be more rampant in women because they generally have wider pelvises than men, Ali Kotek, M.A., A.T.C., P.E.S., a performance enhancement specialist and fellow endurance program manager at Athletico, tells SELF. So to keep the thighs vertical, rather than angled in toward each other, the outer hips have to be even stronger. That’s especially true for women who are bounding from one foot to the other as they run down trails and treadmill belts.
How to do it: Stand up tall while holding onto a sturdy object like a chair, or rest your hands on a wall. Keeping your back straight and core tight, raise one leg up and lift it out to the side and away from your body, keeping your leg straight. Pause for one to two seconds, then return to the start position. That’s one rep. Repeat this movement, alternating sides each time.
You can strain or tear one or more of your hip flexors when you make sudden movements such as changing directions while running or kicking. Sports and athletic activities where this is likely to occur include running, football, soccer, martial arts, dancing, and hockey. In everyday life, you can strain a hip flexor when you slip and fall, for example.