Anatomy & development

Over time women often become focused on family

Female mammals are involved in grooming, feeding and affectionate play with their young. Female mammals are always smaller and more nervous than males. This...

Young women tend to focus on their attractiveness

Girls from the age of 15 or so start to talk of the man they might marry one day and the children they hope...

At puberty girls develop a child-bearing capacity

From a young age, most girls demonstrate a more passive and timid personality than most boys. Girls focus on social activities and rather than...

Men tend to focus on opportunities for regular sex

Men’s goal when engaging in sexual activity is simple. Men want to enjoy their own arousal by close contact with a lover’s body, enjoy...

Young men tend to focus on enjoying their arousal

Men are valued for their physical strength, their practical skills and their personal confidence (leadership). Men increase their muscle mass at puberty by 50%...

At puberty boys develop a reliable arousal cycle

From a young age, many boys already demonstrate a more active and outgoing personality than most girls. Boys enjoy physical activities such as sport...

The internal anatomy involved in reproduction

Our sex is determined by chromosomes. A man has an XY chromosome and a woman has an XX chromosome. There are other combinations (involving...