As the previous Plastic Surgeons so eloquently described, there are advantages and disadvantages to placement of breast implants beneath or over the muscle. I personally work with a large number of very fit women with very little body fat and usually a minimal amount of breast tissue. As such, I generally prefer the sub muscular approach. This approach tends to produce a much more natural result because of the overlying soft tissue as compared to placing implants over the muscle. The disadvantage is that when you are activating the muscle, the implants tend to "dance" or animate which some patients do not prefer. However, in the long run my personal preference is strongly towards the sub pectoral approach and I feel that this would be a good recommendation for you.On that note, I actually operated on a patient in a similar profession this past year and placed the implants under the muscle. She is extremely happy and has returned to full function with a very nice result!I hope that helps and wish you the very best!Warmest regards,-Gregory A Buford MD FACS PCEOBoard Certified Plastic Surgeon and Published Author