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.
In an inspiring performance aboard the USS Midway, the former DEA agent blows away the previous mark.
Fix back pain and improve your performance in the gym -- while never leaving office
Check out this display of strength and balance.
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.
With nearly 10 million Facebook followers, she has an audience that brands want to reach.
Alternate between movements so you can rest one muscle group while attacking another.