Fourth-graders don’t sit on tiny desk chairs in Liberty Looney’s class. Instead, they hop onto pink, blue and green stability balls. The thick, plastic contraptions, also known as exercise or yoga ...

How to have a ball while working out? Reporter Minna Lessig talks to us about exercising on these giant balls, which look like something out of "romper room." The main benefit of using an exercise ...

The slam ball, contrary to what its name might suggest, isn’t just for ball slams. Essentially an extra-large version of the medicine ball made with softer material, the slam ball is a strength ...