HOW: Get set-up laying flat on your back with your heels on a foam roller. Begin the exercise by bridging up to lift your hips up into the air. While keeping your hips as high as you can the entire time, bend your knees and bring your feet back towards your butt as close as you can, then slowly straighten out your knees. Repeat
FEEL: You will feel the muscles behind your thigh, knee, hip, and butt muscles working hard with this exercise. You may also feel your core and back muscles working too, but do not compensate and overuse your back muscles.
COMPENSATION: Limit excessive arching of your back, keep your hips level with the ground. Do not let your hips drop very fast during the eccentric curl out as your legs straighten