Repeat. How to do it: Holding a slam ball in both hands, come down to the floor in situp position with the toes of your bent legs touching a wall. Lie back holding the ball at your chest (easier ...

Forcefully slam the ball down in front of you to the floor, catching it on the rebound. Repeat. Situps with wall slam.Viktor Cvetkovic/Getty Images How to do it: Holding a slam ball in both ...