Jillian Michaels swears by this metabolism-boosting workout

From her new book, this is the Jillian Michaels workout that increases your longevity, metabolism, and vitality—meet metabolic circuit training.

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Photo: Getty Images/David Livingston

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.