The body language during sleep – the sleeping position – is a subconscious action with very little conscious control, so the information it conveys is rarely deceptive and can truly reflect the person’s mental state. Any kind of sleeping posture has advantages and disadvantages, such as the heart because it is protected in the thorax, so the left side lying position is not greatly compressed. According to foreign medical survey statistics found that people who are used to lying on the left side, the incidence of heart disease is more than 70% lower than those who are used to lying on the right side. The doctor explained that this is because mild compression makes the heart function to be exercised and less prone to disease. The baby’s sleeping position reveals the health status: 1. dry mouth, hands and feet: Yin deficiency and lung heat; 2. face down, mouth and tongue ulcers: residual heat is not clean; 3. tossing and turning, bad breath, abdominal distension: sleepy food; Huang Jianping, Department of Rehabilitation Medicine, Guangxi Zhuang Autonomous Region National Hospital; 4. crying and shaking head and scratching ears, with fever: otitis externa, eczema or otitis media; 5. shaking limbs: fatigue or fright; 6. scratching buttocks, anus with small worms 7. snoring and mouth breathing: tonsillar hypertrophy.