Before I talk about this issue, I would like to explain that this issue is important and needs to be explained to you, but I am also worried about scaring pregnant women. In the U.S. this issue is a mandatory course, every parent must master the newborn first aid techniques, including choking rescue, CPR techniques. The reason is that there are many chances for such dangers to happen to newborns, and almost every baby has suffered from choking in one way or another. I wanted to put this issue aside, but by chance, when discussing parenting issues with a mom, she mentioned that when her baby was born 10 days ago, without any reason during the day, she found that the child was pale in color during quiet sleep, not breathing, and stimulating no reflexes, and she immediately performed cardiac compressions, and fortunately she was a nurse, and fortunately it was the daytime, so the child could be resuscitated in time and saved his life. She said very sincerely: you must talk about this problem, they will not be afraid will be very grateful to you. So by making parents cognizant of the need to take precautions, and by being able to deal with it calmly, some babies can definitely be saved. About 1/2000 babies die suddenly in their sleep for no apparent reason between the ages of 2-4 months. Moreover, these infants usually receive good neonatal care and have no signs of illness for any reason. Also, an autopsy cannot find an obvious cause for the death, so the condition is called sudden infant death syndrome (SIDS). There are many theories about the cause of sudden infant death syndrome. Infections, allergies, pneumonia, and vaccinations have all been shown to be unrelated to SIDS. One theory that is widely accepted is that the center in the brain responsible for sleep arousal is delayed in some infants, making them susceptible to stopping breathing under certain circumstances. Therefore, recommendations for safe sleeping positions and sleep environments can not only prevent your child from dying from SIDS, but also reduce the risk of accidental death from suffocation or strangulation. So keep your child in a supine sleeping position, have him sleep in a crib without pillows, blankets, or bumper pads, and place the crib next to your bed. If you’re worried about your child catching a cold, put an extra layer of clothing on him. There are many manufacturers that make pajamas for babies that keep them warm well even without a blanket.