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  • How does Beddit 3 measure Heart Rate and Breathing?

    Beddit 3 measures tiny body movements in response to the heart pumping blood (cardiac contraction), and the breathing effort (thorax expansion). You can see the same effect by standing on an old-fashioned spring scale and watching the ticker flinch with every heartbeat. We spent years filtering the signal from the noise and became exceptionally good at it. Find out more about the underlying principle, called ballistocardiography, on Wikipedia.