That was pumped while wearing a heavy winter coat 
LOL!
Yeah, 'cause we know it tends to get that cold in Spartanburg, and even less so in good old Georgia
(Isn't that where big Lee resides now -- somewhere out of Atlanta, I mean?)
Just kidding.
Lee was awesome but we all know someone ghostwrote those measurements. Sometime around his last win, I saw him live on a Christian evangelist-type show. They asked him about his measurements, and iirc, he said his arms were "about 20 inches" and his chest, "arrr, 'bout 56 inches."
Seems about right.