Many people say that they feel more physically and mentally tuned when under the substance of a drug. I have several friends say that when they smoke marijuana that they feel as if they can see "clearly", as in figure out the underlying message in things. I also had a friend that had done shrooms and LSD, and said that he noticed things that he would have never figured out before. Is there some truth to this? I am not interested in taking any substances, and I myself have smoked marijuana and felt at ease and felt as if I was in control of my dreams when I sleep. Would doing marijuana, shrooms, etc... have adverse effects on the spiritual mind, or negative affects towards being spiritually aware?