In TODAY.com's Expert Tip of the Day, a trainer reveals her favorite exercise for a more defined waistline and strong core ...

Begin on your hands and knees, tuck your toes under and press your hips as far back toward your heels as you feel comfortable ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." What it's best for: Very cushioned, this workout mat is ideal for high-intensity and core workouts in ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Even a no-equipment workout really requires one thing: an exercise mat. They not only protect your body ...

Reformer Pilates uses a spring-loaded mat on a sliding carriage to offer both support and resistance, “ultimately making the ...

Build stronger core in 8 minutes with a bodyweight routine that beats long gym workouts and supports posture and balance ...