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It’s not simply that music motivates you and you run faster. It may be that, instead, your body first responds to the beat, even before your mind joins in; your heart rate and breathing increase and the resulting biochemical reactions join with the music to exhilarate and motivate you to move even faster.
… “Humans and songbirds” are the only creatures “that automatically feel the beat” of a song, she said. The human heart wants to synchronize to music, the legs want to swing, metronomically, to a beat.”
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