Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. For strong, powerful ...

THE LEG CURL is one of the best machines for building hamstring strength and size. If you don't have one handy, though, what's the next best option? There are two types of hamstring curl machines, and ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." THE HAMSTRINGS, ONE of the major muscle groups in the legs, are invaluable for the types of movements ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? Nordic curls are a bit of a gymgoer’s party trick. As you lower the backside ...