Want to burn lots of calories and tone up every inch of your body in as little as 15 minutes? Then you have to try High Intensity Interval Training (HIIT). Because HIIT workouts have you going as hard as you can on specific moves with very little rest between exercises, you keep burning calories and building lean muscle long after your workout has finished. 

Watch the video above for a 15-minute workout you can do anywhere and get ready to torch some major calories.