I could go home early because I had the class only first today. I took a nap after a long time. I was lack of sleep recently. I have gone out to work part-time job all day long on the weekend, and the class and the problem are very busy on the weekday. I have been sleeping for one hour today though I have heard that taking a nap for 30 minutes is the best. I seem to have been very tired. After that, I went to my university to receive the officer's course again. I didn't become tired so much the reason why I napped. I thought that taking a nap was important. (114 words/7769 words)