 The regulators do not get detected. I know, and I appreciate both of you standing here and saying that everything you've done has been because of your hard work. That's admirable. I appreciate it. But I know you've been around some people who have probably or know of situations. And could you share some of the ways athletes try to hide the fact that they're using bad substances or they try to trick testers and regulators? And also, so how do they do it? And based on your experiences, are cheaters often a step ahead of the regulators? You can go.