I haven't eaten any meat since the 4th grade
I used to be the smartest kid in my class but now I feel like I am having more and more trouble in school.
I talked to some people and they said that I might not be as smart as I used to be because I am not getting enough protein which is one of the things needed to develop intelligence (I am only 15)

also, can a lack of protein affect you in sports, like running or soccer?