Chest pain while running may be caused by not breathing properly, inhaling too much cold air or irritating, dry air. If this is ruled out, it is also necessary to consider that it is caused by lung disease and heart disease. When you have chronic bronchitis, emphysema and other respiratory diseases, strenuous exercise will increase the burden of breathing, which will affect the lung function and easily cause chest tightness, shortness of breath and chest pain, so you need to reduce the amount of exercise appropriately and also actively treat the original disease. As it also increases the burden on the heart during exercise, it can easily cause palpitations and can aggravate chest pain due to myocardial ischemia, which can be aggravated by taking oral salvia drops, and also requires gradual exercise, which can be done by brisk walking and jogging.