To people critizing "meat not only protein, you can have protein deficiency and eat meat"..Yes you are right. But it is a joke!....and that girl was annoying
Well, basically to create your cells (which is kinda made of meat), you need proteins from meat as well. Vegies only doesn't provide the total needed essential proteins, which if you want to see, is not one type.
I mean that girl was pretty annoying but still