I used to think weight training was just about building muscle and getting stronger. Boy, was I wrong. After diving deep into the research and tracking my own body’s responses, I discovered that how ...

Here's how to optimize your workouts and lose weight sustainably.

I used to obsess over my fitness tracker after every run, wondering why some days my 3-mile loop showed 280 calories burned and other days it hit 420. Turns out, there’s actually a good reason for ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Whether you’re a lifelong marathoner or you just joined a run club yesterday, lacing up your sneakers and ...

I used to obsess over those online calorie calculators before marathons. You know the ones – punch in your weight, get a number, plan your fueling strategy around it. Then I’d bonk at mile 20 anyway, ...