“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 ...

During those portions of a hard workout or race when my energy starts flagging and I begin questioning my life choices, I often turn my attention to my lower half: Quads, stop burning! Hamstrings, ...