[Ginie]

This is what Dr.Wong says about it:

"Lovemaking is a time of flying hormones (mainly progesterone, testosterone and oxytosin - the orgasm hormone). These can be taken advantage of and put to good use in increasing breast size. Have your partner lavish a ton of attention on your breasts and nipples thoughout your lovemaking sessions and immediately afterward. Gentle massage during this attention will increase the blood circulation to the area getting the hormones into the tissue. There have been couples who have made love, placing intense attention to the breast and then immediately went to work out with the weight training exercises. This flushing of hormone-laden blood through breast tissue increased the cup size of one woman I know of from a saggy 34 B to a firm 36 C in three months!

Breast tissue with it's complicated physiology and varying anatomical structures demands a multi-dimensional approach to its augmentation. One thing alone will not do it all. This combination of supplementation, exercise and sexual stimulation covers all of the bases and will produce the greatest results in size and shape."

He believes in progesterone playing the most important role in breast growth and estrogen is the enemy acording to him
http://www.totalityofbeing.com/FramelessPages/Articles/BreastShape.htm