wow, i must be very susceptible to pot, cause my highs come about a min or so after i take a nice big toke, and if i smoke a full bowl... wow, ill be fucked for the rest of the night, 3-5 hours at least, i find that if i toke up half a joint every 2 hours after i smoke, i can keep a seriously fucked up high for like a weekend. dont do it much, not sure if i ever will again for that long, but it works for me.