Flip your crunches upside down to work your core in an entirely new way

Want to work more muscles tha your usual crunch routine allows? Try upside-down situps, which trainers say will light up your entire abdomen.

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Photo: Getty Images/South_agency

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.