New user with a question

[Endless1]

Thx. So can you body just choose not to turn calories into fat and just toss any excess? Cause I used to be under the impression of a much more direct connection between fat and muscle. And I would do crazy diets. Like eatting nothing but Mcdonalds and spagetti and playing video games for about a year. I think this caused me to lose weight. And now I've been corrected, so i know those were stupid ideas but just curious if body due to metabolism might require a signifigantly higher calorie intake. Like im not overly skinny these days. I went to the gym and got some test and I think I was like 14% Body fat or lower it wasnt really something I was paying attention to. I just know I was in the optimal range.