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Good sleep is absolutely essential for optimal physical and mental performance. However, some people think it is not really necessary to take 8 hours to sleep. But in fact, sleep is very important to have it because it helps you have healthy brain function, emotional well- being, physical health and high longevity. Also it helps you improve your daytime performance and safety.

Firstly, sleep helps you to have a healthy brain function and emotional well - being because you work a long day and your brain have lot of stuff in your head. At the night, while you sleep, your brain is preparing the new information for the next day. It’s creating new pathways to help you learn and remember the new information. Studies show that a good night’s sleep improves learning very much. Whether you're learning math, how to play piano, how to focus on work, or how to drive a car, sleep helps enhance your learning and problem-solving skills. Sleep also helps you pay attention, make decisions, and be creative. The children and teens who lose their sleep or don’t get enough to sleep, they may feel angry and impulsive, have moodswings, feel sad and depressed, or lack motivation. They also may have problems paying attention, may get lower grades and feel stressed.

Secondly, sleep helps you with your physical health and have high longevity. A new study presented at the Radiological Society of North America’s annual conference found that when health professionals got an average of 3 hours of sleep during a 24 hours shift, their hearts suffered for it. The participants had increases in contractility of their hearts, blood pressure,

Sudies shows the people who don't sleep engought at night. They may have a problem with their brain such as can not focus on work, feel dizzy, decrease their creative. If you continue to operate without enough sleep, you may see more long-term and serious health problems. Such as high blood pressure, diabetes, heart attack, heart failure or stroke