HOW: Get set-up flat on your back with your feet supported on an elevated surface with the knees bent at approx. 90 degrees. While maintaining a flat low back, push into the elevated surface to bridge up and lift your hips off the ground. Your body should create a straight line from your shoulders to your knees. Slowly lower down and 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 muscles working too, you shouldn't feel your back muscles working hard.
COMPENSATION: Limit excessive arching of your back, keep your hips level with the ground. Do not let your hips drop or rotate.