You'll have to do a little more than that, of course - but this high-powered workout move is all about the pullup bar. The hanging oblique knee raise is simple to perform, but it'll work a ton of ...

The lower body exercise gives you a chance to hone your balance, build up your legs, and punish your core, all in one move. That's why Don Saladino, trainer to Ryan Reynolds, Sebastian Stan, and other ...