If there is vague pain in the precordial region when you are not well rested, it is generally because the sympathetic nerve is overexcited after a person is overly tired and fatigued, when there is insufficient blood supply to the coronary arteries, resulting in ischemia and itching of the myocardium and causing ischemic spasm of the coronary arteries, and when there is spasm, there is vague pain in the heart, and you must rest well after this situation and improve sleep therapy. When the quality of sleep is poor, it is more likely to lead to a significant aggravation of the symptoms of precordial discomfort due to plant nerve dysfunction. In addition, you should also take medications at this time, such as coenzyme Q10 or compound salvia drops, which have the effect of improving blood supply to the heart and can relieve vague precordial pain.