Sleeping on your back is not good for your lungs, just choose a comfortable sleeping position and avoid long-term pressure on the same side. The claim that sleeping on your back is bad for your lungs is false and lacks scientific evidence. There is no authoritative literature or clinical case study that can prove that sleeping on the back is bad for the lungs. The lungs can also fulfill their respiratory function normally when lying on their backs, and there is no pressure on the lungs. Therefore, there is no need to listen to such rumors, just choose your own comfortable sleeping position. Lungs exist below the rib cage and generally do not affect their normal form and function due to the sleeping position, so just avoid long-term pressure on the same side. At the same time, if accompanied by chronic lung disease, you need to consult a doctor for examination, the general cause of the disease is not improper sleeping position, according to the results of the examination, follow the doctor’s instructions for treatment.