good explanation!

i have seen the big blue so i'm familiar with the mammalian dive reflex.

i'll go with your statement that its unproven that oxygen levels in the organs drops.

for me that points to two things, one, that the human body is indeed amazing that it can concentrate blood where its needed in such situations... and two, that holding your breath longer then 1 or 2 minutes, anything that approaches the threshold of mammalian dive reflex or blood shift, would be pretty counter-productive for hockey in that we need our blood in our muscles.

so, i'm guessing practical use of free diving techniques for uwh would have to be limited to the mental side of things... ?

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