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Can You Sing a Song While Sprinting on a Treadmill Like Taylor Swift? Here’s What It Means About Your Fitness

Commanding the attention of football stadiums full of people by dancing and singing night after night takes serious charisma and talent. But the human body powering it all also needs to have a ridiculously efficient cardiovascular system in order to hit those notes while strut-dancing for hours. In her recent Time Person of the Year profile, […]