No matter which sleeping position has no effect on breast enlargement, supine and side sleeping positions are not easy to compress the local blood circulation of the chest, which is conducive to the development of the chest, but only for the auxiliary role, and can not achieve the effect of real breast enlargement. It should also be noted that bad sleeping posture may inhibit breast development, so you should choose the correct sleeping posture when sleeping. Women can choose to lie on their sides and supine alternately, not only to reduce the pressure on the chest, but also to improve breathing and sleep quality. But it is not recommended to sleep on your back or side for a long time, because the female uterus is in a forward position, long supine may lead to the uterus backward, causing physiological discomfort, excessive menstruation, etc.; right side lying is beneficial for most people, but can lead to both sides of the chest shape is not the same, so you should keep a comfortable sleeping position to sleep, beneficial to the development of the chest. At the same time, women should also try to avoid prone sleeping position, prone easy to cause chest pressure, affecting breathing. Especially for women in the period of breast development, long-term prone sleeping position is likely to affect the thorax and breast development abnormalities, the formation of chest expansion, breast fullness, nipple oblique performance, can also cause cervical spine, lumbar spine pain, etc.. In addition, if you feel that your breasts are very small, you can promote the blood circulation of your breasts through daily dietary supplements, as well as massage, and if necessary, breast augmentation surgery, which can play a role in augmenting your breasts.