Does hypnosis really work?

Hi, This is a pretty much interesting question because I was also not sure until I came to know about this from my uncle who used to do hypnosis to enhance his concentration and to guess the questions for the next day exams in his PG in India. And surprisingly he could do the best. I am not sure whether the items you listed can achieved though. But I heard some thing different that that may also lead to bad results if you do not do properly. Hence you got to learn this from an experience guide. You could refer the site -> a href="http://www.mayoclinic.com/health/hypnosis/SA00084" rel="nofollow"http://www.mayoclinic.com/health/hypnosi…/a for details what is this. Please go through it and see if that is suitable for working on it?.