The triceps-busting move that will light your entire arm on fire

If you're looking to work those triceps—and, well, the rest of your arm muscles—look to try the skull crusher, which burns so good.

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Photo: Getty Images/<br />Squaredpixels

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.