HOW: Lay on your back on the ground. With an anchored band to the wall behind you, pull the band to loop it above your ankle. From this position, keep your leg straight and allow the band to pull your leg closer to you until the back of the thigh is on full stretch. Kick your leg down towards the ground and slowly let the band pull your leg back up to the starting position. Control this motion it on the way up, following a 3-4 second tempo. Repeat for the prescribed repetitions.
FEEL: You should feel your abs and hamstring of the moving leg working.
COMPENSATION: Keep your back flat, especially as you kick your leg down. Make sure your leg follows a straight path and perform the motion with control and appropriate speed