The brain of adult men is approximately 10% larger than that of women. Because men are typically taller and have more muscle mass than women, their brains require more neurons to control the body.
Sexual Activity is Associated with Changes in Inflammatory Biomarkers. In older adults (average age ~66), research shows more frequent sexual activity relates to lower levels of inflammation biomarkers such as C‑reactive protein (CRP) and fibrinogen.
The G-spot concept originates from research in the 1950s focusing on the urethral area.
Ernst Gräfenberg’s early work linked front vaginal wall/urethral tissue to female sexual response.