There are five circuits in there, all 20 minutes or less, with all sorts of exercises (isometric holds, plyometric moves, ...

When Kristin Cavallari says she’s never looked or felt better, you pay attention. The secret behind her transformation? Nashville-based trainer Kevin Klug, who’s revolutionizing fitness with his elite ...

Bring arms up to shoulder height, crossing one on top of the other and as you hold the lunge, rotate torso to the left. Keep ...