Planks are Good for Your Heart, Too—Here’s How to Increase Their Cardio Cred

We know they strengthen the core, but are planks cardio? Here's how to tell if you're getting heart health benefits from your plank.

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Photo: Getty Images/The Good Brigade

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.