Cold that is, cold stimulation, feet by cold stimulation on the principle of stuffy exists, may be related to bronchial asthma and angina and other causes. 1. Bronchial asthma: cold stimulation may cause acute attacks of bronchial asthma, causing strong contraction of airway smooth muscle and airway spasm, followed by ventilation dysfunction, resulting in stuffiness and dyspnea. 2. Angina pectoris: cold stimulation is a common factor inducing angina pectoris, the stimulation will increase the oxygen consumption of the myocardium, resulting in a mismatch between the blood supply to the myocardium supplied by the originally narrowed coronary arteries and the need for oxygen, resulting in symptoms such as panic and shortness of breath. When prolonged recurrence of stuffiness after cold exposure occurs, you should seek medical attention to clarify the cause of the condition to avoid delays.