The cardio world has split into two passionate camps that argue with the intensity of people debating pineapple on pizza. On one side, you have the HIIT devotees who swear by short, brutal workouts ...

High-intensity interval training (HIIT) can look intimidating to beginners, but we’ve got the perfect routine for anyone taking their first shot at it. There are just eight moves to master in this ...

"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 ...

As women enter their 40s and beyond, hormonal changes can make it harder to build muscle, maintain energy, and manage body ...

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 ...

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 ...

Ready to torch calories in less than 30 minutes? This high-intensity interval training (HIIT) session is designed to help you ...

You can always rely on a high-intensity workout to leave you feeling sweaty and exhausted. But a longer workout isn't necessarily better. And a new approach that's gaining fans on social media only ...

Easy workouts might be more appealing than HIIT workouts, but real talk alert: I often struggle to motivate myself to workout full-stop. Even though I’m well aware of the myriad reasons I should ...