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Does your brain sleep when you
do?
Most of us dream about five times
each night. But we only remember a dream if
we've been woken in the middle of it. Dreams
may help us arrange thoughts in our mind.
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By
the time you are 80 years old, you
will have had over 233 600 hours of
sleep! That's the same as sleeping
for 26.67 years.
We dream about 4-5 times a night,
so the average 80-year old will have
had 131 400 dreams in their lifetime.
How many dreams have you had, and
how many can you remember? |
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While you sleep, your brain is
still active. When you dream your brain is as
active as it is when you are awake.
No one knows why we need sleep.
Without it we can't think logically and lose
co-ordination. Perhaps sleeping gives the brain
and body time to recover and sort out the day's
events.
These waves show a person's brain
activity while they are awake and asleep. Which
do you think is which?
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