Facts About Sleep
· 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.
· 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.
· REM (Rapid Eye Movement) dreams are characterised by bizarre plots, but non-REM dreams are repetitive and thought-like, with little imagery – obsessively returning to a suspicion you left your mobile phone somewhere, for example.
· Some scientists believe we dream to fix experiences in long-term memory, that is, we dream about things worth remembering. Others think we dream about things worth forgetting – to eliminate overlapping memories that would otherwise clog up our brains.
· Ducks at risk of attack by predators are able to balance the need for sleep and survival, keeping one half of the brain awake while the other slips into sleep mode.
· Cats sleep up to 18 hours a day.
· Many people who suffer from insomnia suffer from anxiety and depression.
· The average person wakes up about six times per night.
· Even when we are sleeping very deeply, there is still a part of us that picks up sounds and signals from the world around us. That's why parents wake up when the baby cries.
· Experts say one of the most alluring sleep distractions is the 24-hour accessibility of the internet.