Britt Hertz demonstrates the best all-around upper back workout.

Jay Cutler still trains like he's gunning for Mr. Olympia. Cutler didn’t build one of the widest backs in bodybuilding by accident. The four-time Mr. Olympia legend still lifts heavy and sticks to a ...

Our reporters have teamed up with fitness experts to design dozens of routines. Try something new — and build an exercise habit that sticks.