This ultramarathoner just broke the 100-mile world record on a treadmill—here’s how he did it

Before your next run, brush up on these treadmill running tips from Zach Bitter—the ultramarathon runner who just broke the 100-mile treadmill world record.

alt
Photo: Getty Images/Thai Yuan Lim

16 Upper Glutes Exercises Personal Trainers Swear By for a Stronger Butt

Why your upper glutes deserve more love, and the best exercises to strengthen them.

woman doing an upper glutes exercise with an exercise band.