265cc saline Mentor for 18 years, replaced with Mentor HP silicone cohesive gels. What can I do to remain perky 750cc's while working out or sleeping? Also, will they D&F as time progresses? If so, how long? I want the upper pole ares to stay as it is now~ High&firm. I'd like to know if they will D and F more because they are really firm. I've heard they get bigger:) What is the BEST way to massage them? I measured a 34DDD at Victoria's secret on 3/29/13 and am also comfortable in a 36 DD.