How I Sleep - Rotten Circuits
How I Sleep|
|Date:||November 13th, 2009 02:10 pm (UTC)|| |
Best theory I know of for the evolutionary origins of sleep is that it is a safety mechanism - you expend less energy and take less risks by sleeping through to 'unneeded' bits of the day. Various biological mechanisms (mostly mental) then evolved to take advantage of this downtime, rather than sleep being 'needed' as such.