Wim Hof breathing tutorial by Wim Hof

I Mettamage, first of my name (yes! Always wanted to do that), declare on the interwebs as a random person that I was a test subject in the following study: [link] True story :) I guess it helps that: - My name is mettamage (metta = loving-kindness in Buddhism). So I'm into this stuff (read search inside yourself for the science on meditation). - Like Wim, I'm Dutch: Nederlands is mijn moedertaal en ik ben pienter genoeg om Engels te spreken ;-) Soms ben ik een flierefluiter ^^ (Google Translate won't get that right, haha) - I have mentioned it before (it's somewhere in my HN history). TL;DR - what I did in Poland for 4 training days: 1. Breathing Techniques: the most important one is a lot like hyperventilation but not the same (!). Explanation: I couldn't find a good YouTube video quick as even Wim himself isn't explaining it well on YouTube, IMO. He explained it way differently than me. The WHM is a lot like this video, except it's quite quick and not this seemingly relaxing breathing stuff: [this video] 2. Cold exposure training (including breathing technique) 3. Walking up a mountain for 2.5 hours (-7 degrees celsius) in my shoes and shorts. I was fine. It was a lot of fun as well. The adrenaline was high and insanely awesome. Thrill seekers love this stuff. Then afterwards we got tested with an endotoxin. Normally you get an immune response. People who did the WHM had a 50% reduced immune respons and a lot of adrenaline. They think it's because of the shit ton of cortison th