The question has been asked so many times we finally commissioned a research study to figure it out.  Your in luck - the results just arrived!

It looks like his always opitimistic attitude combined with exercise and his wife’s cooking see to be to blame.  In fact, several folks we interviewed after one of his classes commented to his wife, “What did you feed him tonight?”

But probably the most likely source?  He simply loves what he does and lives it every day.  There’s a lot of energy in just doing that.