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, ...

When you don't have much time to spare but want to squeeze in a workout, a 10-minute HIIT session can rev up your metabolism and burn calories. High-intensity interval training (HIIT) involves ...

Get ready to work out with fitness trainer Natalie White, who will be leading this 10-minute HIIT and strength workout joined by Dustin Ripkens and Luisa Fonseca. In this routine, you'll power through ...

Challenge your core and cardio skills with this 10-minute HIIT workout led by fitness trainer Natalie White. She's joined by class members Luisa Fonseca and Madisyn Maniff for this high-energy cardio ...

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 ...

The 30-20-10 workout blends low, moderate and high-intensity intervals to improve VO₂ max, strength and running performance – ...

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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 ...

Workout trends come and go, but when it comes to the biggest bang for your buck, high intensity interval training, or HIIT, has staying power. HIIT’s specific origins are uncertain; some say it dates ...