I saw a post over at peatarian where people discussed how singing affects Co2 levels in the body. What are your thoughts on singing and Co2? Is singing harmful? This study was mentioned in the post:
http://www.google.se/url?sa=t&rct=j&q=& ... 8703,d.bGQ
http://www.google.se/url?sa=t&rct=j&q=& ... 8703,d.bGQ