What type/placement of breast implants works best for a woman who lifts weights and has a muscular chest?

Submuscular silicone: Since female bodybuilders often have very little fat and/or breast tissue to conceal implant edges and ripples, submuscular silicone cohesive gel implants are better than saline. After healing the pec muscles can be worked and strengthened again, and the "extra" tissue coverage is a huge benefit, as well as the decreased risk of capsular contracture. Above the muscle and saline not recommended!

Sub mammary silicone: More likely to consider a sub mammary silicone gel or cohesive gel implant as the strong pectoralis major muscles will deform the implant if placed sub muscularly in a weight lifter with muscular chest. If breast feeding currently then allow breast to settle for a few months before contemplating breast augmentation.

Silicone implants: Prepectoral implants are best for women who are into bodybuilding and have well-defined pectoralis muscles. I would suggest round silicone implants. Anatomic shaped implants are also possible but may shift and result in asymmetry.

Differing Opinions.: Although there are many different opinions as to the best way to approach breast augmentation for weightlifters or weight lifters, i think that the best option available is the use of silicone gel breast implants placed in the sub muscular (dual plane) position. Best to educate yourself about the pros and cons of each option available... Best wishes.

Body fat breast size: This depends on several factors including the natural size of your breasts and body fat. I see that you are breast feeding (congratulations!) but if you have sufficient breast tissue and volume loss, o er the muscle may be excellent with minimal distortion with muscle contraction. However, body builders typically have minimal body fat with small breasts. Implants over the muscle may have ripples.