I’ve been doing WHM for years, and it has been life changing, but I agree with everything he wrote here.<p>WHM basically teaches you to stop the stress and anxiety process by creating a controlled amount of additional stress, either by cold or low oxygen for a short period of time, and then learning the skill of calming your body down on purpose. Long term this helps eliminate stress and anxiety, but I agree it is dangerous if you are, e.g. already on the verge of a panic attack.<p>The calming part is also in his courses, and he also teaches calming breath techniques. It’s important to take his actual course and not just do the breathing exercise by itself.