Recreational drugs such as marijuana definitely remove dream experiences and many abilities to contact the paranormal. The reverse is also true. If you have STOPPED using any medications, drugs, or alcohol, this may have an effect on your abilities to sense or see otherworldly entities.
The best way to gain muscle is through sensible resistence training and a logical nutritional program.
We know that hypnosis does work by the fact that we can get a certain response consistently when we trigger the so-called post-hypnotic suggestion