ruscular: Im also a bodybuilder, which is a sport that athletes participate, hence the word athletic!
I dont think there's a correlation as to the cause of being big by the shape the body is in. However it seem to be a correlation for those that are endow are more likely to take better care of the body.
How many out there heard of reincarnation theory, and thought to yourself, "oh god, I hope not, cause I like to keep the body I have!"?