- Breast size and sex. . The Myth: Can Sex Make Your Breasts Grow? The question “Can Sex Make Your Breasts Grow?” stems from the idea that sexual arousal increases blood flow to the breasts, causing temporary swelling or fullness. Recent research found that women’s sensory cortex has three distinct areas corresponding to stimulation. However, the question that often lingers in the mind of many people is whether breast size plays any role in how sensitive they are. The relative size and development of the breasts is a major secondary sex distinction between females and males. In Nigeria, cultural beliefs and personal preferences shape opinions on this sensitive topic. May 11, 2019 ยท Sex actually changes your body in the short term and the long term. There is also considerable variation in size between individuals. For a start, you may already have noticed short-term changes in your breast size and appearance during and after sex. Both sexes develop breasts from the same embryological tissues. xgk35 hk qvsk6 pfs8jl l7nv b3 ewdnz zizoov sih we3zptz