Body and mind are two sides of the same coin.
Hippocrates (My translation)

I do not know when I first became interested in the possibilities and abilities of the human mind. I think it was quite many years ago, when my mother read about mental training and the results they obtained, in different kinds of sports. So she ordered a mental training course from the author. Back then, I was not too interested in the importance of our minds, but I tried it anyway. I believe it was then my interest started.

If you wonder about the other links, those about Extra Sensory Perception (ESP), Out of Body Experience (OBE), Remote Viewing (RV) and so on. I can tell you, I have always been interested and curious about the unknown, the things science has not been able to explain. I mean, what if there only existed such, science could explain? That would be rather boring, if you ask for my opinion.
Another thing worth mentioning about this topic, is the fact that there are psychics who are very accurate in what they tell people about remote places, lost persons and things, some telling exactly what decease a person has without any examination whatsoever. Well, the list could be very long indeed.
However, there are two directions in this subject; one that is absolutely sure of that these mental abilities are something you are born with and cannot be recieved later in life. It is inherited and there is nothing to do about it, even if you would like to have such abilities. The second direction, which I believe in, is naturally, those who believe that it is possible to learn these abilities. Every human has the possibility to develop mental skills of various sorts. Only a small percentage of the human brain is used, and the rest cannot just be "reserve power".
There is also proof, about this second opinion, which I will show you in the links, that everyone can develop different mental skills.

Now, if you belong to the first opinion, that we cannot learn "supernatural abilities", you may still want to check out some of these links, because as I stated, at the beginning, not all training is focused on this.
It can be as simple as to reduce stress, develop a more positive attitude to life, learn to be more efficient in studying or just feel better in your everyday life. It is a fact that if you are thinking negative thoughts, your body will respond to that, and you feel worse, when you actually do not have to. As you can see, mental training has many positive things to add to your life. So why not try it? =)

I have also noticed that the exercises all begin in the same manner, everyone of them is designed to help you achieve an altered state of mind.

Below I have gathered links which I find interesting, and if you are fascinated of this topic too, I am sure you will find something among them.

"Normal" use of meditation: Sorry, this site is in Swedish only. What positive effects on the body does meditation have, a few methods and instructors, about the brain, positve thinking and more: Hälsa

About dreams, an on-line book and more: Course on Consciousness

About Remoteviewing: Academy of Remote Viewing

Article by Robert Bruce about Astral Projection: Astral Projection

Swedish site about the paranormal, a lot of information about various paranormal abilities and so on: Paranormala fenomen

Ingo Swann´s homepage...Ingo was one of those who work in the Fort Meade Project, which was created to educate psychic Spies during the Cold War. About our hidden abilities. Superpowers of the Human Biomind

Many interesting links to various abilities: One Step Beyond

Another great link site: Spiritweb

A bookstore about these topics: Edgar Cayce Books World Database

Another bookstore: The Magical Blend On-line Catalog - Books

Lucid Dreaming:he Ultimate Guide to Lucid Dreaming

About astral projection, chakras, and more:Welcome to Astralnet