This morning HIIT workout sets you up to be energized and focused for the rest of the day. The best part? It only takes 10 minutes. If you often find yourself feeling extra-sleepy and unfocused—even ...

If cardio seems more like a chore and less like a fun sweat session, this 10-minute HIIT workout can help you switch it up. Presented by Allegra, this high-energy routine is a quick way to get your ...

Imagine driving a car and constantly switching between the gas pedal and brake. You waste a lot of fuel, which is a great way to slim down. And unlike steady exercise, which mostly builds endurance, ...

You've likely heard all about the benefits of exercise for your heart, lungs and blood sugar. Basically, it does the whole body—and mind (thanks, endorphins!) good. However, you may have stopped using ...

Get ready to up the ante with a fun-filled outdoor HIIT session, presented by Allegra. Hosted by Class Fitsugar trainer Jenna Willis, and assisted by Nikki Keeshin and Paris Nicole, this HIIT workout ...

In simple terms, the 30-20-10 workout involves 30 seconds of low-intensity activity, 20 seconds of moderate-intensity ...

If you’re looking to add some kick to your workout and save time while doing it, it’s probably time to try a 15-minute HIIT workout. “HIIT, or high-intensity interval training, essentially means you ...

Kaley Cuoco knew her postpartum workout journey would begin with small steps. So she embraced her treadmill. “Putting that incline up is so good for your muscles, and for your circulation,” Cuoco, 37, ...

Join instructor Sina Riemann for a 20-minute HIIT Pilates class. Riemann incorporates elements of pilates, strength training, and high-intensity cardio for a short but effective workout that's perfect ...