As soon as I got my POWERbreathe, I watched the instructional video to get an idea of how to use it. The getting started video was very handy, because as it turned out, I was among that majority who were breathing with their chest and shoulders instead of with the stomach. So, before I could even start with the POWERbreathe, I had to learn to breathe properly. Once I had mastered that (took around 30min.), I set my POWERbreathe to level 0 and started for real; even though it was just level 0, it proved quite a challenge the first time, because I still had to get used to proper breathing against resistance. I turned the knob ½ to ¾ turn at a time and stayed on that level for at least 2 sessions before I moved on. This was to ensure that I could easily handle the load before I stepped it up a gear, and the second I began breathing with my chest and shoulders, I turned it down ¼ turn to reinforce proper breathing technique. - See more at: http://www.powerbreathebrasil.com.br/blog/josephine-gull-breathing-training-with-the-powerbreathe-starts-now#sthash.7Zjk7ChT.dpuf