- SETUP: Lie flat on the ground and grab a Swiss ball between your extended arms and extended legs.
- REP: Lower your right arm and left leg at the same time (opposites), leaving the ball supported by an opposing arm and leg. Return to all fours on the ball, now switch to the other side.
- TIP: Keep your abs and obliques engaged all the time to ensure the ball never drops.
MUSCLES WORKED BY THIS EXERCISE:
- Abs (Abs)