This Common Mistake People Make When Doing Leg Lowers Wrecks Your Core Work

If you're experiencing lower back pain from core exercises like leg lowers and flutter kicks, trainers say it's from this common mistake in form.

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Photo: Getty Images/Khosrork

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.