The sound of huffing and puffing in the chest cavity when turning from side to side may be a normal physiological phenomenon, or it may be caused by pleural effusion, gradual deterioration of the cartilage of the thoracic rib joints, or bilateral pleurisy. 1. Normal physiological phenomenon: when you turn your body from side to side, the space inside the chest cavity changes, and the pressure inside the chest cavity prompts the gas in and out of the lungs, resulting in the sound of huffing and puffing. 2. Pleural effusion: Pleural effusion is an abnormal increase of fluid in the chest cavity of the patient, which leads to the symptom of puffing in the chest as the patient’s body changes or activities. 3. Gradual deterioration of the cartilage in the sternocostal joints: Gradual deterioration of the cartilage in the sternocostal joints can lead to huffing and puffing when the patient turns from side to side or moves. 4. Bilateral pleurisy: If the patient has bilateral pleurisy, when turning from side to side or changing breath, the pleura of the dirty layer and the pleura of the wall layer will rub together, resulting in huffing and puffing sound. If there are other uncomfortable symptoms, it is recommended that patients go to the hospital in time for examination and symptomatic treatment under the guidance of the doctor.