So you think he's all natural and destroyed the world record big time by those who did get caught cheating? So he's basically super human. Ran faster than anyone in history and those he beat were all eventually caught drugging it up.
I don't think he is saying that. He is clearly using just for the reasons you gave. Just an issue with the term, I believe, as it isn't that noticeable/wouldn't be my first thought and have seen normal people with stomachs like that.
To Pellius' point, run as fast as you can and you are going to be gasping for breath, etc.
Just overused term.