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Start getting stronger and sweat smarter with this fast-paced lower body bodyweight workout, which is part of the Women’s ...

But to get the benefits of HIIT, you need to be ready to work hard. A true HIIT session involves short bursts of intense ...

A typical SIT workout begins with a five-minute light cardio warmup to condition muscles for activity, followed by a maximum ...

Follow along with trainers Jacqueline Kasen and Gerren Liles in the workout video above, or if you're ready to HIIT it solo, read the instructions below for a self-guided workout.

Sprint interval training, or SIT, is super trendy right now. It’s a great way to improve your running speed and to get in a ...

In less than 20 minutes, you can sculpt your arms and abs with this upper body dumbbell workout, all while getting your heart ...

Place the kettlebell on an exercise mat (and be sure to use one if you have a hard floor surface), then adopt a high plank ...

Today we're going to do a High-Intensity Interval Training workout, or HIIT, H-I-I-T ... 10-second rest. Then back do jumping jacks. Here we go. 10 more seconds. All right. Now, when you do ...

The short bursts of hardcore exercise followed by even shorter rest breaks are intense, but the workouts themselves are pretty short. “Excluding a warm-up, HIIT usually lasts for a maximum of 20 ...

If you're struggling to squeeze in your HIIT workout, this dance cardio class is for you. Host and choreographer Kaleila Jordan is here to guide you through a dance workout that will get your ...