The most common mistake people make with their ab workouts, according to a trainer

Some people suck in their stomach while doing ab work. This is wrong—here, a trainer explains how to engage your core the right way for a better workout.

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Photo: Getty Images/ gradyreese

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.