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42 facts tagged with Sleep Facts
Napping After Learning
Taking a nap after learning something can help your retention of it.
Cats and sleep
On average, cats sleep for 2/3 of their life. This would mean that a 9 year old cat has been asleep for 6 years.
When you wake up with a jolt, it's called a Hypnic Jerk. This usually happens during the lightest stages of sleep, and can happen as a natural reaction when you fall asleep in a car or airplane.
Until the 1920s, there was a profession called 'knocker-up', which involved going from client to client and tapping on their windows (or banging on their doors) with long sticks until they woke up.
Camping can help to reset your body clock, according to research.
Pillow hugging while sleeping is a subconscious indication that you miss someone.
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.