It's so tough, you probably won't be able to do it on your first try.
Target more muscles and build more strength with series of easy adjustments.
This five-move workout by Jen Widerstrom combines isometric and plyometric exercises to fatigue your fast-twitch muscle fibers that power quick, explosive movements.
After 10 rounds of this sequence, as demonstrated by Emily Skye, you'll be feeling it the next day.
It has ultra-short, 15-second rests between spurts of effort, which research shows can lead to an astronomical calorie burn.
Fix back pain and improve your performance in the gym -- while never leaving office
Your favorite full-body move just got even better.
Fat burning and upper-body muscle building all in one workout.
Put them together for a great workout that hits them from every angle.
Alternate between movements so you can rest one muscle group while attacking another.