SB Hip Lift/Hamstring Curl

 

Begin with your legs on a stability ball.  Press your hips into the air with your glutes.  Keeping your hips up, curl the ball in with your feet.  Return the ball to the start position and lower your hips.

“Keep hips up” variation- Instead of lowering your hips, perform all of your repetitions with your hips held in the up position.