Our breasts are gland organs hanging on the pectoralis major, without the support of bones and muscles. When exercising, if you don't wear underwear, the vibration of your chest can easily lead to sagging breasts, which will affect your appearance and movements. Long-term heavy exercise, without the support and protection of the chest, will also cause laceration of pectoralis major. In addition, if the underwear is too tight and the body does not sweat well, it will also cause skin inflammation.

Sweat more when you exercise, and air permeability is an important index for choosing underwear. Meanwhile, when you exercise, there will be more friction between your body and your underwear. If you wear underwear with chemical fiber fabric, you must choose carefully, and it is best to choose cotton underwear.

The activities of various parts of the body increase during fitness, so underwear must have good elasticity, especially good supporting performance, to avoid excessive breast trembling when the body fluctuates up and down. At the same time, the underwear shoulder strap should be firm to ensure that it is not easy to slide down, so as not to bring unnecessary trouble and embarrassment.

You can choose sports bra when exercising. Sports bra is a special underwear that protects the chest and does not interfere with sports when doing various sports. Compared with ordinary underwear, it has the functions of shock prevention and sweat absorption.

Any intensity of exercise can make a woman's chest tremble. Sports bra can not only fix the chest from the influence of vibration, but also avoid the obstruction of the chest to sports. In addition, sports bras are generally elastic and convenient for limbs to flex freely.