Here's how to do it and the progressions to try ...

Celebrity trainer Gunnar Peterson — yup, the one who trains the Kardashians, Kate Beckinsale, and the Los Angeles Lakers — wants to help you improve your core workout and make it as effective as ...

A strong core helps with posture, balance and stability, and can prevent and reduce back pain. To effectively strengthen your core you need to work the low back, glutes, pelvic floor and the ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." That's why it pays to dedicate focused training time on your core. You can start with these ab exercises ...