On TikTok, workout tips abound — some credible, some dubious. And recently, you may have been hearing about something called sprint training, which falls somewhere between 12-3-20 treadmill workouts ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." IF YOU'RE an advanced runner, you're probably no stranger to pushing limits. But have you considered ...

High-intensity interval training (a.k.a., HIIT) is a triple threat: “It’s quick, easy, and effective,” says Angela Gargano, a certified trainer and creator of Strong Feels Good & Pull-up Revolution.

Sprint interval training leads to different adaptations in mitochondria compared to traditional endurance training Photo: Getty Images, Niels Starnick; Collage: FITBOOK How training affects cells is ...

Sprint interval training, or SIT, is super trendy right now. It’s a great way to improve your running speed and to get in a hard interval workout, and I’ll explain exactly how. But I also need to ...

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 ...

After months of walking or running outdoors, taking your workout inside to a treadmill can be an adjustment. We all miss the fresh air and change of scenery that being outside affords, but running on ...

Raise your hand if you hated doing suicide runs during basketball practice? How about the beep test during gym class? What about 100-meter rows during crew training? My hand is raised and it's raised ...

I've been getting more and more into running lately, and while I've been tending towards long distance running, one of the best ways to beef up your running expertise is by doing what's called HIIT -- ...