Perhaps a variation on the old adage: "There are no athiests in foxholes"?
Regarding the caffiene experiences, I know I'm a day late and more than a dollar short since you discussed this on Thursday but for me I'm thinking it's preventing me from getting pregnant. As much as I try not to have it, somehow I just can't go without it. When I gave it up last year for a couple of months, I finally got pregnant and then unfortunately had an early miscarriage. Now I take the lovely Excedrin for headaches and I get a lot of those so I seem to not be able to get away from it. Excedrin has caffiene in it by the way. Sorry so long.
Sorry to hear about that "Me"... :-/ It's tough. Human bodies are tough to understand.
Just to point out that the experiment was actually proposed by William Hyde; I just forwarded it to ahbou.