64643, you seem to underestimate the potential power of breating exercises? My advise to you is if you could add an additional 5 minutes to your daily research and learn about "pranayama" as well. You would discover that your answers to adrenalin fatige and oxygen thing lies in breathing exercises...
Like I sed before that there could be so many different theories surrounding ec and one could go on and on for years, therefore it won't be such a great idea on nebodies part to potray himself or herself as an ec expert unless ec is really cured by them...