This is designed specifically for Glute Ham Raises, a bodyweight hamstring movement that concentrates on knee flexion. When incorporated regularly into a training routine, it can help increase hamstring strength, which has been proven to increase squat and deadlift strength, as well as a runners power and speed. The Floor Glute Ham does not add any compressive force to the spine, meaning you can focus solely on the movement and strengthening the hamstrings, which can also reduce risk of ACL injuries occurring.