Stability Ball Plank Rotations
Get in a plank position, but instead of resting your forearms on the ground, you’re going to rest them on the stability ball. Using the traction of your forearms, rotate the ball in circles. Alternate directions after thirty seconds.
This move gets your obliques—those tough to access muscles that run up the sides of your torsos. “Make sure to keep the glutes tight and pelvis stable while going in circles each direction,” suggests Rodocoy.
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