Squats will always light up your glutes and quads. But the cardio king of the squat family-the squat jack-does so much more. For starters, it burns calories like crazy. And since you crank out tons of ...

Plyometric exercises require you to push yourself to your maximum effort through quick and intense bursts of energy like jumping, sprinting, lunging and hopping. They call on you to perform explosive ...

Each branch of the armed forces uses a simple bodyweight exercise to keep everyone in peak physical condition — they clearly understand the benefits of jumping jacks! While exercises like squats, ...

The purpose of high-intensity interval training (HIIT) is to challenge the body by frequently changing the intensity of the exercise and the type of movement you are doing. For example, adding a set ...

Leg day doesn't have to last a long time — just ask ACE-certified personal trainer and Under Armour trainer Ariel Belgrave, who created this 20-minute lower-body HIIT workout. The session is part of ...

Fitness instructors LaToya and Julius guide us in a 20-minute Tabata workout with a warm-up and cool-down focusing your entire body, including both standard and modified versions of each exercise.

Seems simple, right? Jumping with your legs apart while raising and lowering your arms. But don't be fooled by its apparent simplicity. This move is a powerful full-body cardio exercise that deserves ...

But no one wants to spend more time revving that heart rate than they have to, so you want to make sure you’re opting for the move that will hit you hardest. Mountain climbers may be classic, but it’s ...

Target your booty and abs with this 20-minute bodyweight workout from ISSA-certified personal trainer and Under Armour trainer Sydney Torabi. In just four moves, it will help you build strength and ...

When Kusum Sinha, the superintendent of Garden City Public Schools in New York, took a trip this summer to Finland, Estonia and Sweden with other district leaders, she came back wishing she could ...