20" Neck

[DIOS DOMINICANO]

Genetics first and foremost, and also bridging. I know for sure he did bridging as I've seen footage of it.

Also roids.

I bridged since I was 14. My neck got strong...but never big.

You know how some guys can work calves like crazy but they never grow? I think necks are like that.

I can get bigger...but not my neck. By contrast, I see some football players who are ALL neck, but can't develop elsewhere.

[Tyson Jones]

Yeah to the guy who said his bro gained 2 inched to his neck in a month. Thats a lie. Im sorry but it is. Floyd mayweather does hardcore neck exercises and over a 2 month period span, his neck only grew 1/4 inches in diameter. And I doubt your bro worked his neck like floyd did.

Tyson was born with a huge neck, however, he did increase the strength of it by his crazy bridging.