Equipment
Bench
Body Parts
Abs
1. Lie on a bench and grasp it behind your head. Bend your knees 90 degrees and roll your knees back toward your head, raising your body up off the bench and onto your upper back. Brace your abs and squeeze your glutes. Take a sharp breath and hold it. Lower your body until your feet touch the bench and then come back up. If you can, perform the move with your legs extended.