Stepping into a sauna full of naked men and one woman for his latest hybrid comedy/travel series Anh Do Does Scandinavia, certainly tested the comedian's resolve.
He also tests out an incest prevention dating app for the second episode in Iceland where the 320,000-strong population is among the world's most genetically homogeneous countries.
Do had to lay the law down to the crew to not take photos while filming the segment, sans clothes, in the sauna in Sweden and post them online.
He also drops in on Norway for the Scandinavian episode, which airs on February 27, and the following week he traverses one country for Ahn Do Does Iceland.
The funny man said there was a slightly awkward moment when he realised nudity was required to film with the playful "Vikings" in Sweden where they have a very liberal attitude toward life.
"Because it's their culture, you just kind of do it," Do told AAP.
"I said to my cameraman and my producer, look after me and don't take photos and put it on the internet or anything.
"In Australia, we'll think it's pretty intense but over there it's all part of it."
Not only did Do sit in a very compact sauna, shoulder-to-shoulder, with nine other people, they all run naked out of the small wooden room to jump in to a nearby river.
"The water was three degrees and I really had to brace myself for that," he said.
"It's that going from hot to cold, but it's really refreshing."
Do also meets "Moose Man" who has gone from killing the Eurasian elk to caring for them.
The experience moved Do who could not believe a human could have such an affinity, and vice versa, with a wild animal.
"This guys sleeps with baby moose and holds them next to their mother in the snow so they grow up trusting him," Do said.
While meeting the Moose Man was something special, nothing could quite prepare Do for what he found in Iceland.
There was of course the majestic scenery and friendliness of the locals but the Icelanders cannot become too friendly with each other.
Iceland has a relative, pardon the pun, small population for a country and an incest prevention app (Islendiga App) was created last year.
The locals download the app, add their family heritage and if they meet someone they like who also has the app, they bump phones and see how closely, if at all, they are related via an online genealogical database.
So to test the app, Do grabs one of the locals who meets a group of young girls in a bar and chooses one to bump phones with.
"If a local sees a nice looking girl and gets chatting, before he decides if he likes her too much, he turns the app on and he gets her to turn her app on and they bump phones.
"It tells them if they're second or third cousins. Fourth cousins is OK."
* Anh Does Scandinavia screens on Thursday, February 27 at 8.30pm and Anh Does Iceland airs Thursday, March 6 at 8.30pm on the Seven Network.
