Buddy Clint and I were talking about sauna door etiquette…. it’s like Pay it Forward, if you show up to a sauna party, DON’T open the sauna door and greet everybody. Instead quietly get undressed, grab your towel and before opening the sauna door ask the crew in the sauna: “does anyone need anything?”
You’ll be a hero.. just by grabbing a fellow sauna party member a towel, a beer, or their forgotten jug of water.

[...] Two rooms: Critical in cold climates. Just as grocery stores have double doors as an energy saver, your sauna should have a changing room. It’s impossible to have an efficient sauna if the door from the hot room opens to the outside. Close the door! [...]
[...] Why do grocery stores have a changing room? Imagine you are a check out clerk at a grocery store and it’s below freezing with 25 mph winds and some old lady is standing in the doorway for a moment looking at her receipt. Now imagine that you build your own sauna without a changing room and some old lady is standing in the open doorway looking at her receipt. Close the door! [...]