Serenity

I really want to say "Good Morning" on my blog, but things are always out of expectation. Today I created the top record - I got up at 13:30. When I opened my eye, I thought it's about eleven or twelve. But it's THIRTEEN! I don't know what happens to me. I went to bed at 1:30 "yesterday" (for me, the day is really end after going to bed. ). This means I slept eleven hours today. I heard a explanation about sleeping. It's called "Sleeping Debt". No matter how long or short you've slept, your sleeping hours will finally approximate to an average number. The number is different for each people. ( maybe this is why old people sleep less hours than the young ones, we all work too much when we were young. Just kidding. ) According to my statistics for the past 10 months, The necessary hours of mine is about 8 or somewhat below 8. But the average of sleeping hours is 9 in December. I don't have the data of last December, I'm not sure it's normal or abnormal now. Maybe I am storing energy or I've lost too much energy in watching animations and reading comics latest. *smile* Anyway, since I've read the book "The User's Manual for Human Body", I should keep a good sleeping period.