Conversation with s 70-some year old homeless Vietnam veteran with few teeth makes for an interesting and mildly disturbing day. But conversation with an old, well-read Japanese man (who makes the BEST sushi in Nashville for 5 bucks) is enlightening and very informative.
More on that later.
Word of the [not-so] wise: If you go two weeks without any (and I mean ANY) sugar or caffeine, don't partake in a cup of coffee and half a chocolate cupcake. Bad news, that is. Bad bad idea.