This Tennis Ball Trick Can Make Walking or Running Feel So Much Easier

Here's why one professional runner believes in bouncing a tennis ball while running to keep your mind engaged.

alt
Photo: Getty Images/LeoPatrizi

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.