Because mine sh*ts to be honest. I just can't believe how I can't gain weight over months of eating crap like spaghetti and well, carbohyshits in general.
Slim and still have the same abs, haven't been to the gym in almost a month.
Mine is bad tbh. I exercise reasonably often, eat < 1600 calories a day and I am still not satisfied with my weight, even though I have lost some lately.