You deserve a better ab workout than crunches. Strength training can help you build an athletic core. Equipment like a slam ball or medicine balls provides a more dynamic workout for gains. Stability ...

If you've ever played around with a stability ball, chances are you stuck with abs moves like crunches. Don't sell this fun multitasking tool short, though! With the right stability ball exercises, ...

First things first: an exercise ball = physio ball = stability ball = fitness ball. Got that? Good. "A stability ball is a great way to amp up exercises for the entire body: upper, lower, and core." ...

Forget boring sit-ups — a few simple pieces of equipment can help you build a strong, athletic core with dynamic, fun workouts, according to a personal trainer. Weight balls and balance balls allow ...