(Created page with "==晝夜節律== {{TNT|Further|Dark period}} The circadian rhythm is the body clock aligned to local solar time by light exposure and food intake, among other factors. It gene...")
The circadian rhythm is the body clock aligned to local solar time by light exposure and food intake, among other factors. It generates hormonal changes throughout the day consistently to produce effects on the body. One of the main effects is the secretion of melatonin, the presence of which is essential for entering SWS, and also affects the timing of REM sleep.
