Sleeping is something that no one would say “No” to. Scientists and researchers all over the globe are learning more and more about sleep every day and night. Let us look at some facts about sleeping which are not familiar.
- 12% of people dream entirely in black and white
Before colour television was introduced, only 15% of people dreamt in colour whilst older people dream in black and white more often than younger people.
- Humans spend 1/3 of their life sleeping
This obviously differs depending on the age of the human, but on average it’s around a third, which is quite a lot when you think about it.
- The record for the longest period without sleep is 11 days
This was set by a Californian student named Randy Gardner in 1964. This is definitely not recommended, however, as Randy experienced extreme sleep deprivation and others have died staying awake for this long.
- It’s thought that up to 15% of the population are sleepwalkers.
It’s also a myth that you shouldn’t wake someone who is sleepwalking.
- Sleep deprivation will kill you more quickly than food deprivation.
- Born blind experience dreams involving things such as emotion, sound and smell rather than sight
- Humans are the only mammals that willingly delay sleep.
- Two thirds of a cat’s life is spent asleep
- It’s not uncommon for deaf people to use sign language in their sleep
- A giraffe only needs 1.9 hours of sleep a day, whereas a brown bat needs 19.9 hours a day.