Most of us have heard of the circadian rhythm, the natural 24-hour biological cycle that regulates sleep patterns. Infradian rhythms are less well-known. In basic terms, infradian rhythms are ...

Rhythm pulses inside the brain of a Ghanaian drummer, sitting in a physics laboratory in Gottingen, Germany. His hands caress the skin of a bongo drum, guided by the metronome’s tick through his ...

Circadian rhythms are cycles in the body that occur roughly across 24 hours. In humans, circadian rhythms cause physical and mental changes in the body, including feelings of wakefulness and sleep.

Sinus rhythm is the term for the regular pattern of heartbeats driven by the heart’s natural pacemaker, the sinus node. Variations like sinus tachycardia (fast heart rate) and sinus bradycardia (slow ...