Bumping this one - has there been any further discussion on wet vs. dry? I do believe long ago podcasts said dry was perhaps more effective, but then I also remember examples of them setting up their bikes in the bathroom and running a hot shower.
The reason I ask is I have a steam shower/room and live in a very humid climate - it is rarely hot AND dry here on the east coast. Seems a wet heat is closer to what I ride in. I am though interested in the difference in perceived vs. absolute heat. Beyond 90 degrees in the shower is almost unbearable, but when I have gone to a local infrared place 140 seems nice.