Circadian rhythms are natural changes in the body that happen roughly every 24 hours and regulate the sleep-wake cycle. These changes may include core body temperature, hormone levels, alertness, and appetite. So, if the sleep-wake cycle isn’t synchronized with the day-night cycle it means that a person is suffering from some type of circadian rhythm sleep disorder (CRSD). Circadian Rhythm Sleep Disorders Common CRSDs include advanced sleep phase disorder (ASPD), …
Guide: Circadian Rhythm Sleep Disorders
