I've probably told this story before.

During one of the tours Greg apparently caught some type of intestional virus and developed the diarrhea that usually follows this type of ailment. So, what do you do if you're the number one rider in the world, are in the middle of the biggest bike race of the year and you have the runs? Simple. You have someone in the team car hand you a towel, you stuff it down the back of your shorts and you go. You ride away from the car and carry on.

The rider who told this story said that he'd have quit before he did what Greg did and that the smell was awful. That's what makes a champion I guess.