How do people eat normally?

i eat, i get fat but my brain works i don’t eat, i slowly lose weight and obviously my brain can’t do ****

i’ve been trying my hardest to eat recently because i have my a levels coming and this week i have my mocks. having eaten what i thought was a normal amount i’ve very quickly put on a lot of weight (like for example 3kg in the past week) even my dad keeps calling me out for it so it’s not even just in my mind

how the **** can i be eating a normal amount or even slightly less than normal and putting on so much weight so quickly??? with the way my body works i don’t understand how anyone can eat and maintain a weight

i’m started to get really stressed out about the weight gain but as much as i want to run to the toilet to relieve myself after every meal i want to do well in my exams

Doesn't matter how much you eat, matters what you eat, look into more healthy foods