As i understand it, the 2 minute factor equates to the time it takes (on average I guess) to cycle all your blood through your body. Stopping above a specified depth (1/2 max) for two minutes provides your body with the best chance to off-gassing and allowing Nitrogen to be managed by your body.
I have the Manual on PDF, I'll copy paste some extracts in a moment.
Regards
Richard
I have the Manual on PDF, I'll copy paste some extracts in a moment.
Regards
Richard