Read the text below. For questions choose the correct answer.
Why Do We Sleep?
So why do we sleep? This is a question that scientists for centuries and the answer is, no one really sure. Some believe that sleep gives the body a chance from the day’s activities but in reality, the amount of energy saved by sleeping for even eight hours is minimal, the same amount of energy in a piece of toast.
We to sleep because it is essential to maintaining normal levels of cognitive skills like speech, memory, innovative and flexible thinking. In words, sleep plays a significant role in brain development.
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