Heartbeat And Breathing Cycles

... Heartbeat and breathing cycles can become synchronized, a new study shows. Some signs of phase synchrony have been found before, but only in small samples of a dozen or so subjects. By contrast, the study performed by scientists at Bar-Ilan University (Israel), and the Martin-Luther University and the Philipps University (both in Germany), includes 112 healthy subjects of varying ages, men and women, for a variety of sleep stages. ...