Yeah man. I used for about 4 years, occasionally. Never seen any affect from it, was doing awesomeee in school. Finished my second year of uni last summer, started useing evrey weekend for about 4 months. At first it made me amazingly close with all my new friends, and completely changed my personality for the better for months. I was a social-stud. The last 3 times I used I would get really speedy, not relaxed at all, prtty uncomfortable. Stupidly enough I never took that as a sign, then used again after I had a concussion and had a horrible reaction to it and i've been screwed ever since. Since that one time ive had constant anxiety/depression and intense insomnia, whiched I never had before that last roll, forcing me to drop from uni. If you do use, USE RESPONSIBLY and you'll be able to reap the benefits on your personality, I honestly wish I did, it made me manically happy for months until I over did it.