True story: You don't need a lot of time to squeeze in a decent sweat sesh. In fact, research shows that high-intensity interval (HIIT) workouts that last for as little as 10 minutes are more ...

No time to work out? Not a problem with this workout. Sarah Crispo, fitness director at the Athletic Club of York, shared another circuit workout that maximizes muscle groups and calorie burn. In this ...

Massy Arias, a NASM- and ACE-certified personal trainer who has worked with the likes of Jordin Sparks and Kelly Rowland, said that she's a huge fan of circuit training. One of the benefits she ...

Circuit workouts are a great technique to keep things interesting and bust boredom at the gym, and it doesn't hurt that this workout gets your heart rate up while building strong muscles! Learn how to ...

If you only have 15 minutes to sweat, it's easy to skip out on a workout. I mean, how much can you really accomplish in 15 minutes, right? Umm, a lot, actually—if you spend them wisely. That's the ...