Not all gym machines are created equal. In fact, some of them do more harm than good—including the hamstring curl machine. In many cases, machines lock your body into fixed positions that don’t ...

(CNN) — Hamstring tightness is one of the most common complaints I hear from athletes, everyday exercisers and desk workers alike. No matter how much you may try to stretch, the tightness doesn’t go ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Nordic curls are a bit of a gymgoer’s party trick. As you lower the backside of your body backwards ...