Yeah, I realize he breath weight thing is a bit iffy. I didn't do the math myself. So I'll discard that to be fair. You are right about the weight thing though. The average US male weighs 88.6 kilos, so that's 88,600 grams. Take that, and divide the weight lost in this claim (20g), so 20/88,600=0.000225 (I rounded off); then multiply that by 100, so 0.000225*100=0.0225. Meaning that the shift detected is 225/10,000 of a percent shift. That's so small, that I doubt it was anything more than margin of error on his part.
