Some people think that they( get) ill if they use their brains（大脑）too much.  It is not true.  Through many researches, scientists( show) us that the more you use your brains, the better they( be), and the wiser you will become.

    Of course, if you want to keep your mind clear and be energetic（充满活力的）, you( take) a proper rest and study properly.  To the teenagers, ( use) their brains in the morning is good for their health.

    There are many ways ( rest). One is a peaceful rest.  Sleep is a peaceful rest. Another is an active rest. For example( take) a walk outdoors, do morning exercises every day( change) the way of the brains' activities（活动）is also a good way to rest.In everyday life( eat) some eggs, meat, fresh vegetable and fruit is also good for the brains. (wish) you a wise man and a happy life.