If you'd like the stress relieving effect of mushrooms without the guilt of illegal drugs and all that comes with it, try surfing. Apparently, there was a study

If you'd like the stress relieving effect of mushrooms without the guilt of illegal drugs and all that comes with it, try surfing. Apparently, there was a study with PTSD soldiers - one group took, I think it was some kind of amphetamine, for a couple of days and the others went surfing for a couple of weeks with roughly the same positive effect on their PTSD. If you want to know more, I read it in "Stealing Fire" by Steven Kotler and Jamie Wheal.