Crunch (on Bosu Ball) Waist Max

Sit on a BOSU ball with your feet flat on the floor and your lower back supported by the dome. Place your hands behind your head or crossed on your chest. Engage your core and lift your shoulders and upper back off the ball in a crunching motion, squeezing your abdominal muscles. Slowly lower back down with control and repeat for reps, focusing on keeping tension in your abs throughout.

Track This Exercise in the App

Log your crunch (on bosu ball) waist max sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.