Anything less than five minutes to fall asleep at night means you're
sleep deprived. The ideal is between 10 and 15 minutes, meaning
you're still tired enough to sleep deeply, but not so exhausted
you feel sleepy by day.
- It's
impossible to tell if someone is really awake without close medical
supervision. People can take cat naps with their eyes open without
even being aware of it.
The
record for the longest period without sleep is 18 days, 21 hours,
40 minutes during a rocking chair marathon. The record holder reported
hallucinations, paranoia, blurred vision, slurred speech and memory
and concentration lapses.
A new baby typically results in 400-750 hours lost sleep for parents
in the first year
One of the best predictors of insomnia later in life is the development
of bad habits from having sleep disturbed by young children.
REM sleep occurs in bursts totalling about 2 hours a night, usually
beginning about 90 minutes after falling asleep.
clipped from: abc.net.au