Functional core exercises are all the rage these days, and Aaron Horschig, D.P.T., of Squat University made a compelling case ...

To help her clients build muscle, strengthen their core and burn fat (she has also trained Halle Berry, Scarlett Johansson, ...

You might want to try Pilates instead if you're serious about core strength. This low-impact exercise focuses on slow, ...

I’ve never enjoyed doing sit-ups. From doing them on the cold, hard gym floor at school to tediously tagging them onto the end of another workout, they’ve always felt uncomfortable on my lower back ...