There was a similar thread in the medium sections on how some members who are physic/mediums get gassy when they are on 'work mode' or the presence of spirits come around. Something to read for kicks ( posted below)
Its not a strange question at all.I know when I read affirmations, I can feel internal energy rise. I am sure there is something related in the body.
http://www.spiritualforums.com/vb/sh...d.php?t=109773