If you didn't already know it, President Clinton (politicians in the US keep their titles for life) had a quadruple bypass and then followup complications - not good. He was a fan of cheeseburgers and heading not so slowly into ill health and death.
So he became nearly vegan. He looks amazing. He was on David Letterman and seemed more than happy to talk about his diet. Letterman has had similar problems. Leterman asks how Clinton did it and when he explains, says "See, but I don't want to do that", as if a life without meat and dairy is not a life worth living. Letterman keeps cutting him off as he tries to explain. https://www.youtube.com/watch?v=aPpcBMw ... re=related
Have you had similar experiences? You look great, how did you do it? OK, that's enough. I don't want to know about it.
I found it very telling. We can see more than a funny moment. I think (as I feel), Clinton would have been happy to go on about it.