I find the same with smoking pot...I haven't smoked pot for a week, I know not along time but I was smoking alot every day like more then most would be...Turning up to lessons BLAZED. Not even being able to speak without fucking up. Food dosen't taste the same, I'm not as hungry...Bored alot etc etc. Plus I started chain smoking tabbaco. ( I smoked rollies before but not as much )