Originally Posted by Aurelius
Considering only the physics of bicycling, that's true. But I'm thinking of the added strain on his pulmonary system in supplying oxygen and nutrients to all those fat cells. It's not the same as wearing a backpack filled with 50 lbs of rocks. That would be bad enough, but being fat means that his body is expending a lot more energy than mine just keeping those fat cells alive.
I'm not worried about his lungs. His heart though