The Oxygen advantage is perhaps one of those books beginner freedivers (as well as experienced and especially instrucors) should pick up after completing their first course. Granted, much of what the author Patrick McKeown writes about is already mostly understood by freedivers, but there are some other specific gasses and chemicals, such as EPO and
A simple explanation on how humans are able to extend their breath hold time, enabling us to dive without the aid of Breathing Apparatus (BA). Before we start, I suggest you read this. There are a couple of things you need to understand; oxygen (o2), Carbon Dioxide (Co2) and relaxation. Oxygen (o2) and Carbon Dioxide
This is the first topic that is learnt in freediving and involves ‘changing’ our breathing. People can often become confused with this concept and wonder ‘Am I filling my belly enough?’ or ‘Should I be exhaling this long?’ etc etc Why do we perform the breathe up? In freediving it is very important to relax;