많은 짤과 흥미로운 이야기

These days, there are many people who stay up late without sleeping. I often stay up late at night, like lying on my bed with my smartphone or watching TV. Especially, I think our country people tend to do that. If you come back from work late, you don't have much personal life, so that's why you tend to do that. The average adult sleeps six to eight hours. Let's not keep our teeth and learn abo..