Yeah, I was doing the WHM every day for a lot of 2019 and 2020, now less breathwork, still mostly cold showers! The book "What Doesn't Kill Us" by Scott Carney about training with Wim was a motivation -- inspiring and informative
Noticed any subjective or objective differences from it all? RHR down, feeling more energy, etc.? Thanks for the reco, added to the list!