I’m here to shed some light on why so many fitness classes happen in the dark

Fitness trainers from various studios—from boxing to spinning and yoga—explain the surprising benefits of working out in the dark.

alt
Photo: Getty/WestEnd 61

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.