"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." A glute-hamstring developer, commonly known as a GHD machine, is a large, specialized piece of equipment ...

Back extensions, hyperextensions, Roman chair extensions — whatever you want to call them, this back exercise is brilliant at strengthening the muscles along the back of your body, known as the ...

If you’re looking for an exercise that does it all, it’s hard to find one that beats the deadlift. As a compound movement, it targets multiple muscle groups simultaneously, including the hamstrings, ...