In TODAY.com's Expert Tip of the Day, a trainer explains how incorporating HIIT into a weekly workout routine can boost one's metabolism and help with weight loss.

This month we will be alternating between HIIT walks and a simple HIIT routine that uses just your bodyweight to get your heart rate up. On days when we’re doing walking workouts, you have three ...

HIIT workouts are meant to be fast and furious. They rely on explosive exercises like burpees, high knees, kettlebell swings, sprints, and other moves that spike your heart rate and make you sweat — ...

That HIIT workout routine is upping your cortisol (stress) levels. The head of research at Les Mills wants you to keep it under 40 minutes per week. “Cortisol is not particularly a ‘bad’ hormone, it’s ...

Ready to sweat? Join fitness instructor Christina "Poofy" Moffitino, who will be leading this 10-minute summer sweat HIIT workout alongside class members Lilian Gonzalez and Chelsey Cioli. In this ...

Taking on a menopause HIIT workout can be a great way to manage symptoms like fatigue and low mood. You may feel more tired than usual, which makes it hard to find time, motivation, or energy to ...

Remember the buzzy boutique fitness classes that soared in the mid to late-2010s? There was a time when you couldn’t skim a stone down 23rd Street in Manhattan without it ricocheting off three ...

Torch calories and sculpt your legs with this high-intensity dumbbell HIIT routine! No gym needed — just grab your dumbbells ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." High-intensity interval training (otherwise known as HIIT) may sound, well, intense. And it can be. But ...

<strong> This story was originally published in the December 2017 issue of Men's Health. </strong> The HIIT Workout Plan for Winter Staying fit in December isnt easy ...

The season of cozy sweaters and new TV shows is upon us—but that doesn’t mean you want to throw your workout routine out the window and just curl up with a pumpkin spice latte. Looking for a fitness ...