@@ursowrongwrongisaid TBH only when you are a dwarf or kid ,then you weigh 29 kg which is normal. Apparently he can't be a kid. so I can't get your point.
In my teens I will force myself to puke the food I ate to avoid taking in the kcal. I end up with very bad gastric pain my whole life. Now if I skip a meal my gastric will kicks in.