This exercise uses the theraband to assist with the leg circle, which in turn increases the hamstring stretch.
To do this exercise you will need a mat and a theraband. Start by lying on your back with one leg long along the floor and one foot pointing to the ceiling. Wrap the theraband around the foot that is in the air while holding each end of the theraband in your hands. Begin circling the leg in the hip socket. As you pull your leg towards you, feel the stretch in the back of your thigh and lower leg then as you lower your leg out and around engage your deep abdominals and pelvic floor to keep the pelvis from rolling with the leg. Repeat the circle 5-10 times in each direction to really increase the length in the back of the leg
Things to think about
This exercise increases the length in the back of the hamstrings and is what is called a dynamic stretch. Encouraging movement and length at the same time in any muscle will increase the length found and increase the chances of maintaining the length once the exercise is finished.