A Pulmonologist Says You Should Start Paying Attention To *This* Metric on Your Apple Watch

The Apple Watch Blood Oxygen is the wearable's newest metric—and this pulmonologist is excited about what it means for the future of your health.

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Photo: Getty Images/Grace Cary

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.