The breathing technique is a no BS technique. You just need to get the air in. You have to keep inhaling until you start feeling the effects of raised blood ph

The breathing technique is a no BS technique. You just need to get the air in. You have to keep inhaling until you start feeling the effects of raised blood ph levels (dizziness, passing out, tingles etc.). You can breathe through nose or mouth, you can take as many breaths as you want, they have to be deep inhale, not that much of an exhale and that is it. Optimum frequency is mostly just finding the breath rhythm that will get you to the state you need. You can experiment and try to go further and see what happens (worst case you pass out or start having some seizures). I also experience a euphoric light headedness after one round. Sometimes I need to do a second round to experience it.