High-intensity interval training is hyped as the best way to lose weight due to its intense calorie burn in a short time, but ...

Interval running condenses the powerful effects of regular running into shorter, high-intensity bursts. Research shows it can ...

So much messaging for women around doing sprint or HIIT training suggests a rigid framework where you go a certain number of ...

Runna has sparked curiosity—and criticism. Running isn’t exactly my preferred method of cardio. I was a swimmer all my life, ...

In TODAY.com's Expert Tip of the Day, a trainer reveals the pros and cons of full-body strength workouts and how results ...