A recent article published by Dan Europe and still viewable on their FB page, I consider to be one of the most valuable pieces of research into an aspect of deep freedive physiology that I have come across in a long time.
It concerned genetic markers for a susceptibility to lung squeeze.
It brought to mind the vital importanceĀ  of knowing how to train for depth and the necessity of understanding of the role of NO in deep diving so here are some thoughts on the subject –