There is a strange thing happening each night. People turn off the lights, pull up the covers and close their eyes. They sleep. Seven or eight sleeping hours later, they wake up. It is so strange, isn't it?
The best conditions for sleeping are good health and a proper diet. A comfortable place is important, too.
Strange things happen during sleep. For example, people often move. You would feel tired if you didn't. You also dream. Part of your brain is still awake when you dream. Dreaming happens when the memory and imagination in parts of your brain are still awake. Experiments have shown most of us dream in color. Bad dreams may be caused by stomachache. Don't worry if you dream. Some great stories and poems were begun while their writers slept.
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