It’s lunchtime on a Wednesday and I am in a dark room, shaking intensely. My forearms are propped up on a big black machine called a “Sweatlana”. Like five other quaking women beside me, I am ...

Every athlete wants a stronger core, but “what’s the best ab workout?” is a loaded question. The right answer depends on what kind of athlete you are, what your body needs, and what your goals are.

Every athlete wants a stronger core, but “what’s the best ab workout?” is a loaded question. The right answer depends on what kind of athlete you are, what your body needs, and what your goals are.

Add Yahoo as a preferred source to see more of our stories on Google. "Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." That's why it pays to dedicate ...