The differences in human sexes can be understood evolutionarily after understanding the reproductive methods of males and females. Men could potentially reproduce almost infinitely if they had the ability, while women were limited by pregnancy periods and physical constraints, making it difficult to have more than 10 children. These physical characteristics largely determine how males and females would naturally be selected.
Being overly cautious about sex is problematic. Living life shows us that there are men who express many feminine traits and women who possess many masculine traits.
Sex Notion
Human Sex usages
