Add Yahoo as a preferred source to see more of our stories on Google. Mirna Valerio is an ultramarathoner who runs the "Fat Girl Running" blog. She wants people to know that anyone can be a runner.

The beef has always been there. While hitting the outdoors for a brisk walk or a jog, which one to pick – when you’re trying to not only burn calories but also sustain that weight loss? Deciding ...

The viral 12-3-30 workout possesses all the hallmarks of a typical TikTok fitness trend: a self-descriptive name, an easy-to-remember hashtag, and the promise of an easier way to burn fat—in this case ...

“Runner’s waist” is the claim that running builds bulky obliques, thickens your midsection, and can make it harder to achieve an “hourglass” figure. But while it’s viral on TikTok, this trend is not ...