Unit 9: Brain Power

During our sleep the brain repairs itself and stores information. If we do not sleep, then we will be tired and cannot remember things so well. It may become weaker. People sleep badly when they are not relaxed. They are thinking about their work or studies. Late at night they make phone calls or look at email messages and also have too much drinks or dinner. To sleep well, we need to sleep in a comfortable bed. The bedroom must be dark and quiet. We should also read a book, have a hot bath, or listen to relaxing music every night at the same time.