context: so i have two best friends & they are both tiny & skinny & literally eat junk food every single day & never gain weight . they're absolutely gorgeous btw , one with blonde hair & blue eyes , the other with olive skin & brown hair . & then there's me . the fat , ugly one .
question: Why don't the friends gain weight ?
reference: They don't eat more calories than they burn .
candidate: They don't eat enough food.