Sleep is very important. Did you know that sleep is more important than food? A person who does not sleep dies faster than a person who does not eat.
Let's say you go to sleep 12 hours late. It will take your body about three weeks to return to nor mal. We spend about a thid (1/3) of our lives in sleep every day. Children 6 to 12 years old need an average of 10 of 12 hours of sleep. Teenagers need 9 to 10 hours of sleep. An aduit needs an average of 7 to 8 hour a night. There are some people who need only 3 hours of sleep. Others need 10 hours of sleep. After the age of 50, the average sleep time goes down to 6.5 hours a night. We need less sleep as we get older. Most people have some nights when they cannot fall asleep. The name of this problem is insomnai. The word insomnai means "no sleep." Some people say, "I didn't sleep all night." But that's not really true. They may sleep lightly and wake up several time. In the morning, they only remember the times they were awake, so they think they were awake all night.
This is not new problem. Mamy famous people in history had insomnia. Some of these people had special ideasbto make them sleep. Benjamin Franklin, the famous statesman and invertor, had four beds. He moved from one to the other to fall asleep, King Louis XIV of rance had 413 beds and hoped to fall asleep in one of them. Mark Twain, the famous American writer, had a different way. He lay on his sind across the end of the bed!