I once took a yoga class where the instructor encouraged me to try wheel pose, a backbend that requires you to contort into a U shape. My body was not making that shape that day, but her words stuck ...

IF THE WORD "fartlek" makes you giggle, you're not alone. But there’s nothing funny about how this style of training can help runners—especially beginners—level up to faster speeds. The idea of ...

There is nothing fun about this running progression, other than when it is done. Once you have improved your running pace with 400- and 800-meter goal pace repeats, the next challenge is to take it up ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. A running habit ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If you've ever done a track workout before, you know it's incredibly satisfying to fly down the lanes and ...

If you've ever done a track workout before, you know it's incredibly satisfying to fly down the lanes and really dig deep to beat the clock. Sure, long-distance runs and tempo runs have their charm, ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." IF THE WORD "fartlek" makes you giggle, you're not alone. But there’s nothing funny about how this style ...