Sleep is one of the essential and necessary activities in the daily life of human beings. According to statistics, about 30% of a person’s life is spent in sleep. When people are in a state of sleep, the brain and body are rested, adjusted and restored. A good sleep helps people to work and study everyday. And science to improve the quality of sleep is the guarantee of people’s normal work and study life, bad sleep habits will not only affect a person’s work and study, and may even lead to the occurrence of disease. Today to give you a wake-up call, this kind of sleep position maybe we have had, but it is will affect our health. Some people are used to sleeping with their hands under their heads, which will not only affect blood circulation, causing numbness and soreness in the upper limbs, but also make the abdominal pressure rise, which over time will cause food and gastric juices to flow back into the esophagus, forming “reflux esophagitis”. Reflux stimulates the esophagus for a long time and can even lead to malignant transformation of the esophagus.