A strong heartbeat is not necessarily a pathological phenomenon. For a thin person, a strong heartbeat can be caused by too much exercise, which does not require treatment and can recover on its own. If the heartbeat is particularly strong in the resting state, it may be caused by paroxysmal tachycardia, the most common is sinus tachycardia, most of which is caused by staying up late, exertion, excessive coffee intake, etc. It can also be relieved by itself. If a strong heartbeat occurs frequently, you should go to the hospital for an electrocardiogram to identify the cause. Some patients may have disorders of phytocontrol and some psychological disorders and often feel that their heartbeat is abnormal. If the heartbeat is caused by thyroid dysfunction, a thyroid function test should be performed to see if there is hyperthyroidism. Sometimes, abnormal heartbeat can occur when there is ion disorder in the body such as hypokalemia, which should be treated for the cause.