What exactly did your quick research say?
I'll be honest, I got this from the first thing that popped up (yahoo answers
) because I'm brain fried... but from what I've read in the past I'm pretty sure that anything lower than 5-6% body fat is not a good thing (especially for a physical athlete)....
2% body fat is basically life threatening, 3% is required just to be able to walk around and have your nerves and body work properly. (hint: the average emaciated children you see on Sally Struthers infomercials and the concentration camp victims of the Halocaust had more than 3% body fat, they were somewhere around the 5 to 6% mark, and were deteoriating). Below 3% and the fat surrounding and protecting your organs is going, which means you could rupture an organ just by taking a fall. So I think that you might be off on the body fat percentage or he is just really really exagerrating.
Your average athlete (say a ripped Terrell Owens) is around 11%. Ronnie Coleman (multiple Mr. Olympia body builder) is around 17 to 20% in the off season, and only gets to about 6 or 7% just for the stage, and he has to take 3 months off to recuperate after making those numbers.
3% body fat is really extreme, despite my current lacking of a credible source. I'm pretty sure I could find something credible to back up my claim.