Corseted undershirts may affect the poor blood circulation in the chest, resulting in pain, chest swelling, etc., eczema and other adverse reactions. 1. Pain: As corset may affect breathing, chest movement will be limited, resulting in poor blood circulation, so there may be symptoms of breast pain, reduce the time of wearing corset undershirts, can reduce the symptoms of headache. 2. Chest swelling: If women in the period of youthful development, long-term wearing of corset may lead to restricted blood circulation in the chest, thus to the emergence of chest swelling and pain in the chest, so that the normal development of the contour of the chest is impeded. 3. Eczema: If you wear corset underwear for a long time in summer, the breathability is poor, the chest is in a smothered state, and if you sweat, it may lead to the phenomenon of eczema on the breast skin. Usually do not recommend long-term wearing girdle chest, if serious, due to the properties affect the blood flow around the mammary glands, may also appear breast hyperplasia disease, usually should wear appropriate underwear, to maintain the natural development of the breasts, to reduce the time of wearing girdle chest, to prevent the body from producing adverse effects.