To accommodate daily recurring environmental changes, animals show cyclic variations in
behaviour and physiology, which include prominent behavioural states such as sleep–wake …

Humans, like all mammals, partition their daily behaviour into activity (wakefulness) and rest
(sleep) phases that differ largely in their metabolic requirements. The circadian clock …

The Earth turns on its axis every 24 h; almost all life on the planet has a mechanism—
circadian rhythmicity—to anticipate the daily changes caused by this rotation. The molecular …

The circadian system, that is ubiquitous across species, generates∼ 24 h rhythms in
virtually all biological processes, and allows them to anticipate and adapt to the 24 h …

Background: The circadian timing system or circadian clock plays a crucial role in many
biological processes, such as the sleep-wake cycle, hormone secretion, cardiovascular …

Circadian rhythms (CR) are a series of endogenous autonomous oscillators generated by
the molecular circadian clock which acting on coordinating internal time with the external …

Anecdotally, there can be little doubt that sleep plays a role in maintaining a good mood and
cognitive acuity. Sleep deprivation one night followed by “getting a good night's sleep” on …

An Integrated View of Potassium Homeostasis | New England Journal of Medicine Skip to main
content The New England Journal of Medicine homepage Advanced Search SEARCH …

Coincident with recent global warming, species have shifted their geographic distributions to
cooler environments, generally by moving along thermal axes to higher latitudes, higher …

Light exerts a wide range of effects on mammalian physiology and behavior. As well as
synchronizing circadian rhythms to the external environment, light has been shown to …