Sit on the ball with your feet flat on the floor. Place your hands on the ball, or on your hips to make it more challenging.
Add Yahoo as a preferred source to see more of our stories on Google. Few things in life are as cathartic and effective as a slam ball workout. Implementing slam ball exercises into your fitness ...
Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. It’s easy to almost ...