Chest pain after waking up may be caused by the following reasons: First, it may be due to sleeping on your stomach or the limbs or body of the person sleeping next to you compressing the chest for a long time, which leads to local pressure and poor blood circulation and ischemic pain. This situation is generally after the morning activities, local blood circulation to restore, the pain will naturally ease. Second, there may be heart problems, such as angina pectoris, or acute myocardial infarction, which is common in middle-aged and elderly people. Patients who usually have high blood pressure, diabetes, coronary heart disease are more common in addition to chest pain, accompanied by chest tightness, palpitations, dizziness, weakness of the limbs and other symptoms, highly suspected of an acute heart attack, must immediately go to the hospital to do the relevant examination and treatment.