Stop Exercise Regimen Before Breast Augmentation?

You do not need to stop your exercise before the surgery but you will need to stop for about 4 weeks after you have your implants.

Some surgeon want you to stop for about 2 weeks after your surgery and some want you to hold off for longer, there is no real formula but I choose 4 weeks to be on the safe side.

Exercise is greatly beneficial to general health, but it’s important to refrain from vigorous activity the day before. However you should ask your surgeon for their advice as they may have different guidelines. 

Hi,
Thank you for your question!
No, it is not necessary to stop exercising before your surgery. You will just want to make sure you don't over do it. After surgery is a different story. You will have to put exercising on hold for up to 4-6 weeks.
Best regards,
Dr. Speron

As others have mentioned, you may exercise as much as you desire prior to surgery. After surgery, depending on your surgeon's preference, you will have to refrain from strenuous activity for 2-4 weeks. The reason for this is the fear that delayed bleeding can still happen with exertion during this interval. If a significant amount of bleeding were to occur, it could result in a hematoma, which is collection of blood which would require surgical drainage.
Best of luck!

Generally, the pecotralis major muscle is the primary muscle of concern when placing implants submuscularly.
Excercise can enhance the blood supply of muscles.
If you are partaking in an exercise regimen that promotes bulk of the pectoralis muscles: bench press, wide stanced push ups, pec deck, etc, I would advise stopping these for 2-3 weeks prior to surgery to let them relax and atrophy a bit. However, that is just my opinion based on anectdotal experience.

There is no need to slow down your exercise regimen before surgery, but aftewards, you will need to modify your activities for at least 4 weeks after surgery (sometimes as much as 6 weeks depending on your procedure and the surgeon who performs it).