Plus, the surprising benefits of turning the intensity down a notch.

IF YOU’RE LOOKING for a style of workout that will push you to your limits without needing to exercise for hours, you only need to understand one four-letter acronym: HIIT. The term stands for high ...

High-intensity interval training, or HIIT, is a great way to torch calories, boost your metabolism and get a great workout in a shorter amount of time. And if you're a fan of hopping on the treadmill ...

With these five ideas for fun cardio HIIT workouts, you'll be enjoying your exercise routine more than ever. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

They’re so easy to incorporate into your week.

In HIIT workouts, you're tasked to complete cardio and strength-building exercises such as lunges, jumping jacks, squats, and burpees, with short periods of rest in between. When practiced correctly ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

Exercise is known to benefit heart health. High-intensity interval training (HIIT) that combines aerobic exercise with ...