eh... i think this is why
WITHDRAWAL SYMPTOMS- - - -mild to moderate, non life-threatening withdrawal symptoms occur after daily use in some users. These may last for 1-6 weeks after cessation of use and can include anxiety, anhedonia (reduced experience of pleasure), headaches, general unease/discomfort, difficulty sleeping, and a desire to smoke pot. Severity of symptoms is related to frequency of use and individual sensitivity. slight loss of appetite finding non-stoned life a bit dull, increased boredom