Abs, you’ve been warned: The windshield wiper plank means business

Planks are effective for strengthening your core muscles, but they're boring. This plank variation is a fun take on the classic. All you need is a towel.

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Photo: Stocksy/ Studio Firma

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.