I just find this fascinating

[meganursula]

http://seattletimes.nwsource.com/html/nationworld/2003770752_fat02.html

I'm a huge proponent of exercise as a tool to regulate stress and mood issues. But this is a different causal direction. (And considers fat, not exercise, but exercise, healthy nutrition, and maintaining a weight that allows for proper body mechanics are all intertwined in my mind.)