This back-focused training session delivers on its name, as Kali Muscle and Big Boy put each other through a high-volume, high-intensity routine. Mixing compound lifts with focused isolation work, the ...

A porcupine works out with tiny, determined bursts of energy and focus.

“You’re basically getting maximum effectiveness for the time you’ve got because this training style gets your heart rate up for a cardio boost and it works multiple muscle groups at once—these ...

The somersault squat is a funny-looking move that builds the quad muscles. Here's what to know about the leg day staple, and ...