An Egyptian-born bodybuilder's 31-inch biceps have been crowned the biggest in the world, the Daily Mail reported.
Moustafa Ismail, 24, has spent 10 years pumping iron twice a day and his upper arms now have the same circumference as a grown man's waist.
" Big Mo" eats as much as 3 lbs of chicken, 1 pound of steak or fish and four cups of almonds washed down with two gallons of water and three litres of protein shakes.
The bodybuilder was so dedicated to bulking up his arms he moved his whole family to America to gain access to better workout equipment, according to the Mail.
Ismail, who lives with his wife Carolina, started bodybuilding ten years ago in a bid to keep fit. He moved to the US five years ago.