Have a read of this, I just looked up Happy Humphrey on the internet, and this is what I found:
William J. Cobb
Ring name(s) Happy Humphrey
Height 6 ft 1 in (1.85 m)
Weight 1,000 lb (450 kg)[1]
Born July 16, 1926
Died March 14, 1989(1989-03-14) (aged 62)
Debut 1953
Retired 1962
William J. Cobb (July 16, 1926 - March 14, 1989), best known by his ring and screen names of Happy Humphrey and "Squasher" Humphrey, was one of the heaviest professional wrestlers of all time. His most active period was in the 1950s and 1960s when he billed himself as "the world's largest wrestler". Humphrey averaged 750 lb (340 kg) during his career.[3] Several times, he weighed in at over 800 lb (360 kg), and on one occasion he weighed over 1,000 lb (450 kg)
Humphrey's promoters had a 1951 Pontiac heavily modified to carry the wrestler around: seats were removed and extra shocks were installed to support Humphrey's enormous weight (and also as a gimmick). In addition, he was usually weighed before matches on meat scales at rendering facilities.
And read this, and try not to be disturbed for the mental image....
In 1960, Humphrey met future multiple NWA World Campion Harley Race, who was only 17 at the time. Race, who was just beginning his own career, was hired as Humphrey's driver and he also wrestled Humphrey on multiple occasions. Race earned $5 per day, plus room and board, for driving Humphrey, and $25 for each match he wrestled with Humphrey.[1] According to Race, Humphrey was so large that normal showers could not accommodate him. As a result, Humphrey was obliged to lie naked on the ground while Race would apply liquid soap to his body, scrub him with a mop and then rinse him off with a garden hose
How the hell does anyone let themselves get so fat?! I am guessing Humphrey was incredibly strong, but you lose so much mobility being that size its not worth it. Not surprisingly he died at a pretty young age.