There are many factors that include body fatness. One being your age your metabolism slows as you age, your gender (women have slower metabolisms), your physical activity, and of course what you eat.
Answer:
you move your body a lot in weird position
If your body is lacking a substance like water or salt it will reabsorb some of it,
Answer:
i think in order to stop vaping like put vasline on the thing so it doesnt taste good and every time you do it it might gross you out of it? if that doesnt work maybe you should try and turn to some hobbie that is theraputic like writing and drawing everytime you think of vaping? im sorry im not much of a help