Recent years, I felt more and more tired because of so many unfinished tasks. According to common sense, there'll be more personal time when students in college, but reality is different on me.<div>I have a strong desire for sleeping, I'll be awake no more than 7 hours per day and during the rest time, I would be very sleepy. At that time, I believe in that nothing can prevent me from sleeping and all I want is my bed. However, there'll be more homework during this semester. When I go through work days, I finally have my weekend. But most time would be spent on sleeping and seeing a doctor. Especially, when I left my homework on weekend, I'll be crazy. For example, when I waked up today on Saturday, I went out for relaxation with my freind and went back in the evening, I suddenly found I haven't done my homework!</div>