In another thread, someone posted that they had read a study that said that vacation divers using Nitrox reported having more sex than those not using Nitrox (I aint kidding here it was posted in another thread here on this board). After reading that I would have taken a Nitrox course immediately, except I already had my Nitrox card. As it is, I started using Nitrox even when on land whenever possible
From this thread
http://www.scubaboard.com/forums/advanced-scuba-discussions/459883-diving-air-vs-nitrox.html
As an aside, I seem to recall that "Undercurrents" had the results of an admittedly self-directed study that seemd to indicate that couples who dived nitrox on week long dive trips had more sex than couples who dived air.