When modern-day crooner Trey Songz sings, “Cause girl, my heart beats for you,” in his romantic ballad, “Flatline,” his lyrics could be telling a tale that’s as much physiological as it is emotional, according to a University of California, Davis, study that found lovers’ hearts indeed beat for each other, or at least at the same rate.
Emilio Ferrer, a UC Davis psychology professor who has conducted a series of studies on couples in romantic relationships, found that couples connected to monitors measuring heart rates and respiration get their heart rate in sync, and they breathe in and out at the same intervals.
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