Uneven loads will build a rock-solid core while also cranking up the heart rate.
This movement promotes mobility and coordination in addition to building strength.
Trainer Alexia Clark demonstrates how you can build total-body endurance with just three exercises.
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.