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 ...

For lower back and glute strength, master the art of hip hyperextensions—here’s how. Undrey/Getty Images Hip hyperextension exercises are an important, if often tricky, workout move that involve ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." THE BACK extension, that time-tested move for building back strength, has been around the block. But here ...