1. Secondly, lack of sleep also affects a person's mental outlook. People who often lack sleep may seem tired and feel powerless to do anything. Finally, long-term lack of sleep can also affect thinking, and it is often impossible to think actively.
2、Lack of sleep also caused me a lot of sleepiness, which made my academic performance fluctuate up and down. I didn't feel energetic all day and dark circles began to appear. Lack of sleep also made me feel extremely sleepy, which caused my academic performance to fluctuate. I felt low in energy all day and began to have dark circles under my eyes.

3. Writing ideas: Adequate sleep will make people energetic, whether they are doing things or studying, but if they don't get enough sleep, they will make people tired and lose interest in everything.

4. June 21 is "World Sleep Day". Please write an English essay of about 100 words to an English newspaper based on the lack of sleep among your classmates, explaining the dangers of lack of sleep and making suggestions: 1. Impact on learning. 2. Hazards to health. 3. How to improve sleep.

5. There is always not enough time for them. But they will also work hard to squeeze in time. Giving up sleep time is a common way. They always sleep less and spend most of their sleep time doing other things, which they think is meaningful. In the short term, it seems like a good way to gain more time. But in the long run, it will do more harm than good. Not getting enough sleep can damage your health and cause other problems.



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