The main reason is lack of sleep. When I was pregnant, I looked forward to the future like a supermodel in a magazine. When I go out to work every day, I dress elegantly and make up exquisitely. On weekends, my family and I pushed the baby in a stroller to the mall. I often invite my girlfriends to have afternoon tea, have dessert and chat, and spend a few hours relaxing. When I am free, I will dance Duoyan Zheng for half an hour to keep healthy, and then sign up for an online English class to enhance my competitiveness ... However, after becoming a mother, all I can think about is. After the baby was born, all the beautiful fantasies of the past were shattered into slag. In the face of a baby who will communicate with me by crying anytime and anywhere, whether it is day or night, she will cry when she wakes up, reminding me that it is time to feed! It's time to change diapers! I'm not happy, please coax me! At first, I was very excited, and finally I had a chance to practice Da Vinci's sleep method. (Note: The Italian painter Leonardo da Vinci invented the timed short-term sleep delay work method, that is, sleep 15 minutes every 4 hours of work. However, the reality is that for a mortal like me, it is not reliable to stay awake and have good physical strength by this way of sleeping. What keeps me up again and again in the middle of the night to nurse and change diapers is entirely based on humanitarian responsibility rather than energy. To be fair, my husband is fine, a model husband. During confinement, I skillfully took a bath, changed diapers and played everything except breast-feeding. Only when the child cries at night can he help it. He sleeps like a pig and can't get up to help me. Let me get some sleep. I also specially wrote a paragraph in the circle of friends: "Excuse me, as the only party member in the family, what kind of leading role did the father play in the process of putting the children to sleep?" -let party member sleep first! "Scientists made an intimate explanation. They say that since primitive people, babies need more attention from their mothers if they want to live, so they will try their best to make their crying frequency more easily received by women. That's why the baby cries late at night, and the mother can get up as soon as she turns over, while the father is still sleeping. In other words, the baby's crying is an alarm clock tailored for mothers, which automatically chooses to ignore fathers.