5 new fitness research findings that will change the way you work out

We've uncovered five new research findings that could make your sweat sessions super-effective—and efficient.

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Photo: Stocksy/Mauro Grigollo

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.