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 ...

Dana Santas, known as the “Mobility Maker,” is a certified strength and conditioning specialist and mind-body coach in professional sports. She is also the author of “Practical Solutions for Back Pain ...

"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 ...