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! Try this move: kneel on all fours and place the ball on the floor in front of you touching your chest. Jump forward, rolling your body over the ball. Go until the ball is under your knees or your feet if you are strong enough. You should end in a plank position with your hands holding you up. Finally, push back to the starting position. Add repeats until you are smoked." - Sgt Tim Peterson of Sgt Peterson's Boot Camp
Plus, their favorite exercise using it!
Trainers Reveal: The #1 Piece of Equipment I Swear By