There are two schools of thought in managing breast implants after surgery. The first is to avoid aggressively massaging the breast implants, and thus keeping the breast pocket unchanged. The second is to aggressively massage the breast implants, and thus keeping the breast implant pockets a little larger. If the implant pocket is tighter, the implants will sit more upright . However, longer term you can have a potential higher incidence of capsular contracture. If you keep the implant pocket larger, there is a lower incidence of capsular contracture. However, the implants may be more mobile. Regardless, if your breast implants feel like they are too mobile and are migrating to your armpits, you can easily correct the issue by applying some internal sutures to re-tighten the breast pocket.