Definitely true about the immunity, and who wants to smoke the same stuff all the time anyways!? Change is always good. Just expand your contact list some, I cant even tell you how many ppl I call trying to find good buds, just depends on who has what at what time. Most everyone I call I have been friends with for at least a few years, so just use your best judgement. I dont like shady people, and you shouldnt either!