There is a particularly strange phenomenon in our life. After dinner at night, I fell asleep at eight or nine o'clock, but I woke up at 1 1, so now many people are used to starting work after 1 1. Some people 1 1 always want something to eat at night, so they look for something to eat in the house. Why? This is because just at this time, the sun be the spirit begins to sprout, so a very important principle is that it is best to go to bed before 1 1 so as to supply this vitality slowly. People's sleep has a great relationship with people's life span, so sleeping is to raise yang.