Yet when you go to the doctor how much time do they spend talking about your cardio routine vs popping you on the scales or talking about weight?

Well, last doctors I 've seen actually got angry when I mentioned that I 'll get back on my bike. They said 2 weeks after the surgery to insert plate and screws after my crash were not enough. They didn’t bother to ask my weight at any instance. Orthopedic surgeons… XD

Seriously though, effects of exercise on human health are not exactly lacking in research. Its pretty old, but I found it really very interesting.