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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.


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?


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?

Brain Wave


Brain Wave