Nothing will humble you like an exercise ball. Working with an exercise ball can also help you improve your sense of your body in space, a.k.a. proprioception, Jeffers explains. “Stability ball ...

Sculpting your core, shoulders, chest, triceps, and glutes all in the same workout requires a ton of equipment, right? Wrong. All you need for this full-body sequence from trainer is an exercise ball.

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 ...