Well, I don't know if this is exactly what you're looking for but I was quite impressed by the following experiment run on Wim Hof https://www.youtube.com/watch?v=BqsvJedwUyg
I wouldn't say it's the reverse placebo, perhaps the best explanation would be a manually manifested placebo.
BeuPingu t1_isci0ds wrote
Reply to Does a reverse placebo exist? by Nearby-Cloud-3476
Well, I don't know if this is exactly what you're looking for but I was quite impressed by the following experiment run on Wim Hof https://www.youtube.com/watch?v=BqsvJedwUyg
I wouldn't say it's the reverse placebo, perhaps the best explanation would be a manually manifested placebo.