In article <127hugh.1 at chiron.wits.ac.za>, 127hugh at chiron.wits.ac.za (Hugh
S. Selsick) wrote:
> I am interested in gathering ideas about the purpose of sleep.Can anyone
> suggest why sleep may have evolved, or what physiological functions it
> serves? Does sleep serve the same purpose in all animals?
Evolutionary-wise, sleep may have evolved, among other things, to protect
the animal from being preyed on during those times of the day/night when
they were not adapted to survive. Much better to stay in one place and
live than to move around aimlessly and become someone else's lunch. Also,
it gives the organism to process it's last meal and build up energy.
Arctic Fox
