After chatting for a while, I fell asleep in my room in the morning, and I was a little tired after spending the afternoon outside. Lying in bed, it didn't take long to fall asleep. But I don't know what's going on, but this time I slept very poorly, and I felt very nervous, as if something terrible strange was going to happen to me. After sleeping for half a day without falling asleep, I feel angry in my heart. The more I want to fall asleep, the more I can't fall asleep. At this time, I feel particularly tired and mentally sleepy, and I want to sleep a lot....