|
|
Article: What are circadian rhythms and how do they work?; HOW IT WORKS: YOUR BODY
- Article from:
- The Press
- Article date:
- December 30, 2005
CopyrightCopyright 2005 The Press. Provided by ProQuest LLC. (Hide copyright information)
|
What are circadian rhythms and how do they work?
Circadian rhythm is the name given to the roughly 24-hour
biological cycle shown by physiological processes in plants, animals
and bacteria.
It is synchronised to the external cycles of light and darkness.
.
Animal circadian rhythms
Circadian rhythms are important in determining sleeping, alertness
and feeding patterns of all animals, including humans. Brain-wave
activity, hormone production, cell regeneration, body temperature,
urine production, blood pressure and other biological activities are
linked to this 24-hour cycle. Our body and brain alternate between
states of high activity during the waking day and recuperation, rest,
and ...