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.

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

HIIT workouts can boost your metabolic rate (helping you burn more calories throughout the day). And science backs up this ...

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

To unlock a stronger upper body, get creative with your lower body ... this workout to hit a 400-yard drive. These 20-minute HIIT workouts are the most efficient ways to train when you're low ...

If strengthening your upper body is one of your fitness goals this year, then you need workouts that effectively target a wide range of muscle groups. Your back, chest, arms and shoulders all need ...

Still, you might wake up with that familiar and pretty satisfying achy feeling that comes from a great workout, after trying this routine ... making it an upper-body all-rounder, excusing all ...

Even if you have a normal weight and body mass index (BMI), too ... a few times to get the maximum benefit. Some HIIT exercises that people of all fitness levels and ages can try are: Jumping ...

Here's his comeback workout. We asked 11 trainers for the moves guys shy away from, neglect, or just don't know about, and ended up with a list of 30 exercises ... a stronger upper body, get ...

For those who live to sweat — but maybe want a chance to fully catch their breath — SIT is the new HIIT ... SIT workouts offer additional benefits to the body, “When your heart and lungs ...

You'll start with a warmup where you'll rock your hips, body roll, and squat. Then, you'll jump right into the workout. Jordan breaks down the dance moves but sneaks in some HIIT cardio moves like ...