The Best 10-Minute High-Intensity Workout

High-intensity interval training, aka HIIT, is one of the best ways to maximize your workout time. Burn a ton of calories and boost your metabolism in little time with celeb trainer Astrid McGuire‘s full-body HIIT workout. It may be only 10 minutes long, but it will leave you dripping with sweat. There’s no equipment needed…

A 400-Calorie Treadmill Workout That Targets Your Butt

If you want to burn 100 calories in 10 minutes, and tone your tush and legs at the same time, go for a run. For even greater lower-body-sculpting power, you’ll need to add hills to your workout. I know. I know. Hills suck! And if running up hills is way too challenging, walking briskly will…