You can try to help the breasts to develop twice through exercise and physical therapy, but the effect is generally very little, if there is a related need to consider surgery to improve the shape of the breasts. 1. Exercise. Regular chest expansion exercises, push-ups and other chest exercises may be helpful in promoting the secondary development of breasts. It is recommended to do so under professional guidance. 2. Physical therapy. Acupuncture, massage of breast-related acupoints such as Shen Feng, breast root, etc. can stimulate the breasts and may also help promote the secondary development of breasts. It is recommended to do it under the operation of professionals. 3. Surgery. Conservative treatments mentioned above are generally difficult to achieve significant results. If the person concerned has an obvious need for breast shape, he/she can obtain the ideal breast shape by means of surgery. Surgeries such as autologous fat cell filling and silicone implantation can effectively help to improve the shape of the breasts, and thus achieve the effect of “secondary development of the breasts” from the naked eye. If you are considering surgery, it is recommended that you go to a regular hospital to maximize your safety and satisfaction.