Why do niggers have good bodies?

I always wondered by niggers have such muscular bodies, even when they seem to be doing nothing at all. nothing at all. NOTHING AT ALL. NOTHING AT AAALLLL.

is it something in the genes? Also why do they have big cocks.

Nigs are so big and muscular since back in the slave day they were selectively bred so that only the strongest were bred with the strongest. The result being a bunch of strong ass nigs. Hence the natural strength even when they do nothing.