why did i get "dumber" as i grew up?

[IAMNOTANINCEL]

When i was a kid, i was very good at math and science stuff, i could calculate things effortlessly and even with distractions in a short amount of time
Now i struggle to learn new complex things and can't work with distractions

 

[ElTruecel]

Non NT

 

[IAMNOTANINCEL]

Non NT

elabroate

 

[Mr. President]

I have realized that i am more conscious the weaker my body is. As I get leaner the less I reflect and actually have that youthful vigour speak of. I don't want to be here anymore, I have been made free from my reason