What color is your blood. Red, right? Well, actually, yes. So why does it look blue when you see it through your skin? And is everyone's blood always the same color red (spoiler: no)? Do all animals have red blood ('nother spoiler: no!)? And why is red blood red anyway?
One large egg weighs approximately 2 ounces. Each egg is classified  into medium, large, extra large, and jumbo based on their actual  weight.
Vitamins. Hard-boiled eggs are a rich source of several different vitamins. One large egg offers 23 percent of the recommended dietary allowance of vitamin B-12, 8 percent of the RDA of vitamin A, 7 percent of the RDA of vitamin D and 6 percent of the RDA of folate.