I don't know why you'd want to do this if you were healthy
Given that there's usually very little non-oxygenated haemoglobin in your blood, but there are conditions that can cause low blood oxygen. I suspect there is an element of placebo effect here - if I'd gone to all that effort I could probably convince myself it made me feel better!
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tarka_dall Like normal dall, only a bit more spicy, Wed 30 Jan 2019, 7:38,
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