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 ...

"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 ...

If firming up your midsection is on your to-do list, you're not alone. Getting rid of stubborn belly fat is one of the most common goals for people looking to lose weight and get fit. And while ...