Have to lie
These guys, and also actors (you think the major stars who get huge and ripped for movies suddenly get a natural surge of test at 30+ years old? Or maybe just maybe they are juicing???) CAN'T come out and admit to juicing. Not only would it kill their sponsorships, but juicing is illegal in the US. If you're at all famous or well known and publicly admit to this, don't be surprised when the feds come pounding on your door. It would be foolish for them to admit.