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When Members of Choirs Sing, Many Hearts Beat As One

Yasha Wallin

Researchers of the Sahlgrenska Academy at the University of Gothenburg in Sweden studied the heart rates of high school choir members as they joined their voices. Their research confirms that choir music has calming effects on the heart — especially when sung in unison. But what really struck them was that in no time, the singers' heart rates became synchronized. The readout from the pulse monitors starts as a jumble of jagged lines, but quickly becomes a series of uniform peaks.

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