In this chapter of, The Brain Rules, Medina  speaks about the differences between male and female. For example, the differences in sicknesses and disease we develop. Males are more prone to doing drugs, while females have a higher chance of developing depression. Males also use the right side of their brain, which lets them just get the feeling of what is done, while females tend to look into detail whatever it is they experience or do. This explains a lot about gender and the different mentalities that males and females have.