Lying down with a fast heartbeat is often related to the heart relay, the heart beating too fast will cause self-consciousness, the heart beating very also causes thumping, and when the heart is beating very slowly. So if this happens, such patients will be advised to have an ECG or ambulatory ECG to investigate the cause. Of course, there are a few normal people who feel their heart thumping when their sympathetic nerves are excited and their heartbeat is heavy, that is, when their heart beats too fast, too slow, or when their rhythm is disturbed. The technical term for a pounding heart is palpitations, which can cause discomfort and naturally bad sleep at night. If you have an attack, you can have your doctor listen to you, and if you don’t have an attack, you can have an ambulatory electrocardiogram, which will basically determine the cause of the palpitations. The symptoms can be slowed down with heart rate control drugs such as betalactam or bisoprolol, and most of the heart discomfort can be relieved after professional medical treatment.