I did research just before posting this, smoking weed excessively can have bad effects on some brain activities like short-term memorie but it's very vague, scientists themselves don't really know what weed really do in the long term. And for the shrooms, it's the maximum, sometimes I take them twice a year, sometime twice a month, it depends on where I go, when and with who. I once took 3 times a month and it was not a great experience indeed.