i've had anxiety and depression and shit and i used to totally flip out and do the whole heart racing checking pulse thing, there were a couple times i thought i was gonna have a heart attack and stuff, but i just changed my like mental state towards it and now im fine, rather than trying to fight the bad effects (racing heart, etc.) i just accept it as part of the high and see it as something positive or just something not worth paying attention too and i enjoy it a lot more. hope this helps! keep on tokin:rasta: