pacman did too lol theres evidence of holyfeild buying PEDS. none on pacman and im willing to bet theyre investigating pacman more than holyfeild
Don't try to train your neck without consulting a professional. You can literally break your neck if you go about it the wrong way. Be cautious about it, not stupid.
Gotta remember that tyson started doing that stuff when he was REAL young, so, he was great at it by this time. Im sure it was a slow buildup.
Buy a 4 way neck machine <http://www.amazon.com/TDS-C-6300-4-Way-Neck-Machine/dp/B000SSRBVK>. I added about an inch (maybe just a tad less) since I started. I know this is true because my old dress shirts are too tight in the collar now, and I have had to buy new shirts with wider collars. So get the 4 way neck machine. You won't regret it.