The hip adductor stretch stretches the muscles of your inner thigh. Improved flexibility of your hip adductors makes it easier for you to move your leg out to the side.
Get into a standing position with your feet wide apart. You can try this exercise with your toes pointing straight ahead or pointing outward. You may notice that you feel the stretch in a slightly different place depending on where your toes are pointed.
Shift your weight over to one side until you feel a stretch in the inner thigh of your opposite leg. You should feel a "gentle discomfort" with this stretch. It should not be painful. Hold the static stretch for 30 seconds. Then return to the starting position.