>>75354
>my bmi is like 18, (that is in the normal size range) why so seethy

i've been dealing with attention seeking e-girls for years they all say they're naturally skinny when they're obviously underweight.

You can't directly affect your skeletal structure, but the amount of fat and muscle you have is entirely under your control barring some limitations like hormonal levels (women have more limits for building muscle than men). So the question is: why aren't you eating enough to maintain a normal bodyweight, and why aren't you moving enough to build muscle?