The other day in class the point was brought up about body types, under the umbrella theory of morphology. Currently, I am in Psych 1 and we briefly discussed this in lecture. Basically the idea was brought up in response to phrenology, the theory by Gall that you can determine a person's personality types by feeling the bumps on their heads (if you're interested, you can read more about phrenology here).
The idea is there are three different body types - ectomorph, endomorph and mesomorph. Each of these body types have specific physical traits that greatly affects the personality of the individual. In essence, you can determine what a person's traits are simply by looking at them.
Endomorphs are short and stout and tend to be very carefree, fun loving people. Ectomorphs are tall and skinny and usually are very closed off and reserved. Mesomorphs have an athletic, muscular build and are competitive and adventurous. More details about these traits are here.
Obviously, we have moved on a great deal from these initial theories about the brain and body. I personally feel that there is no way we can judge a person simply on how they physically appear, everyone should be proud of their bodies. Regardless, I still think it's interesting to read up on these earlier theories of psychology and biology. It might give us some insight on ideas we have today.