Legendary health and fitness icon and champion bodybuilder Bill Pearl is a must-have person to include on this list. Not only is he a multiple time Mr Universe winner and was once considered the best built man on earth.
He switched to a vegetarian lifestyle at the age of 39 and was still able to maintain his superhuman levels of muscle size and strength. Pearl and his wife eliminated meats from their diets 1 by 1 until they were bonafide vegetarians. As Pearl got older he did eventually include milk and eggs in his diet as well.