It's quite simple as being bigger, stronger and leaner = feeling better about yourself in general. For example, I feel very good knowing that I am a better physical speciman than the average Joe. On the other end, some of the lardasses I see stumbling through Walmart must look at themselves and just know that they are really just a pile of shit with a set of eyes. Some people are so pathetic and have zero self respect that they morph into a piece of human waste and they are an absolute trainwreck and disgusting. That might sound shallow but it takes self respect to work hard and take care of oneself.