I have/had stomach ulcers and was self medicating for a long time before getting it treated. Now it's mostly habitual. Your body builds up a large tolerance r

I have/had stomach ulcers and was self medicating for a long time before getting it treated. Now it's mostly habitual. Your body builds up a large tolerance rapidly, like 10x difference when you are a daily user vs casual user. I can see why your friend takes a break once in a while. If I smoke 0.5 gram (about 5 large pulls from a pipe), the effects wear off in about 2 hours. If I take a break for two weeks, one tiny pull from the pipe will last about 4-6 hours or longer. I might not feel clear headed until the next day.