Gym ball exercises are the underrated Pilates alternative. They challenge the core, shoulders, arms, and back in a similar way and use a versatile fitness essential. I love a Pilates workout at home.

Confession: The last time I used a Bosu ball was at least five years ago. In the meantime, I've dabbled with resistance bands, kettlebells, and a rowing machine in my workouts to keep things ...

In this week's "Workout Wednesday," fitness trainer Rhonda Murphy shares how a few routines with an exercise ball can do wonders for your core.