Everybody knows who Hulk Hogan is but very few know that he was 300 lbs and 6'7 in height and had 24 inch Biceps.
Dwayne 'The Rock' Johnson shares 'hellish' bicep routine that gave him 21-inch arms.
Shaquille O'Neal's arm size
Shaquille O'Neal is gifted with a good height. He's 7'1. However, his arm size as compared to most of them are less. His arm size is 18 inches.
Ronnie Coleman's arm size
Ronnie Coleman's arm size was 22.8 inches, and he was considered as one of the most aesthetic people in the bodybuilding universe.
Lou Ferrigno's Arm size
At his peak, Ferrigno was 6-foot five and 285 pounds and his measurements were as follows: thighs: 29"; bicep 22.5"; waist 34"; chest 59"; and neck 19".