Circadian rhythm
6 articles carry this tag. Tags group articles across topics; each article still sits under one topic in the contents.
- Sleep physiology · The biological systems that regulate when sleep occurs, the stages of a night of sleep, and the links between sleep duration, disease and risk of death.
- Sleep duration and mortality · How habitual sleep length, sleep regularity and sleep disorders relate to the risk of death in long-term population studies.
- Sleep quality · Sleep quality describes how well a person sleeps, including how quickly they fall asleep, how often they wake and how rested they feel.
- Naps · A nap is a short sleep taken during the daytime; short naps improve alertness, while regular naps of an hour or more are linked to a higher risk of death.
- Meal timing · Meal timing is the clock time and daily regularity of eating; very late and irregular meals are linked to higher cardiovascular and mortality risk.
- Melatonin · Melatonin is a hormone made by the pineal gland (a small gland deep in the brain) at night; as a supplement it is studied mainly for shifting the timing of sleep, for jet lag and for insomnia.