No, PFI does NOT teach hyperventilation! They DO teach purging, and they are also VERY careful to explain the differences between purging and HV! They also discourage even doing purging until the Advanced level. TRUST me on this, I've been through TWO PFI courses (I was even one of Mandy-Rae's safety freedivers on her world record dive last year), and one FIT course (and going back down to dive with Martin and co. in two weeks).
Todd
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Adventure is out there...LIVE, don't just exist.
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