like i say, keep it in moderation, and youall be all right. me, ive overdone it my self, ive been tokin fir the last 6 years, and up untill jan of this years it was daily, and as a result my fittness is terrible. my doc says give it a rest for a year or so, get fit and then keep it in moderation. the anoying part is i only got my volcano in june, cost me £330 (over $500), and i cant use it for ages now!what vap have u got?