Protein

"Boo hoo, I can't get protein without meat!"
"Har har, plants don't have protein!"
"But...but protein!"

LET ME STOP YOU RIGHT THERE, BRO. 

What do all these muscular, beastly, super-not-weak-or-sickly creatures have in common?

If you guessed something along the lines of "plant-based diet", woo-hoo, you get a star!

There are an estimated <3 million vegans in the United States alone>. Ever wonder why you don't hear about vegans dying by the thousands from protein deficiency? Surprise, it's not a thing, provided you don't live solely off of Oreos and Swedish Fish like some 6-year-old in a pillow fort and eat balanced meals like a fairly sensible adult.<insert fact here: studies show that vegans and vegetarians can get protein blah blah blah>. 

Let's lay down some knowledge on protein sources. Here is a fairly decent list of plant-based protein sources that'll help you build and repair muscle tissue, stay satisfied, and not die.