Yeah I listened to an episode of Joe Rogan's podcast where he had Wim on and heard him talk about how he had helped people with autoimmune diseases. I wish he had gone into more detail about how he has coached people specifically, but he said you could just tap into your immune system and control it just with the breathing.

All of the claims he makes are so ridiculous that they make you want to call BS, but you can't argue with all of the crazy shit he has done, and the science that's come out of studying him.