Stuffiness is a feeling of self-conscious chest tightness and poor breathing, which is related to myocardial ischemia. Myocardial ischemia is caused by the narrowing of the lumen of the blood vessels, which is caused by the greed for animal fats and meat, resulting in the elevation of blood lipids, which are deposited in the inner wall of blood vessels over time and form atheromatous plaques. The narrowing of blood vessels caused by plaque will accelerate the loss of elasticity of blood vessels, which will reduce the blood supply to the heart muscle and lead to suffocating symptoms. If only suffocating sensation is present, the condition is mild. First, you can check your blood glucose to rule out diabetes because diabetes can cause microangiopathy, which can lead to narrowing of blood vessels. Second, we can check blood lipids, if the blood lipids are high, we can take a low-fat diet to slow down the narrowing of blood vessels, and we can take Rosuvastatin to lower blood lipids, and aerobic exercise, such as walking, can improve the function of the heart muscle and reduce the symptoms of suffocation.