Science and mysticism go hand in hand. Science is the critical sibling of mysticism, who sometimes debunks mysticism's false theories or helps gives possible answers to why things are the way they are. Mysticism merely points out strange phenomenon science has yet to explain. Without mysticism, science has no reason to search for the truth. So keep that in mind, even though something may seem unbelievable at the time, there will be scientific studies in the future to prove or disprove otherwise.
With that said, there are a lot of strange made up beliefs people use to keep themselves sheltered, all which stems from fear and lack of knowing. In an attempt to shed light on this, lets take a look at these myths for reading enjoyment.
That's entirely up to you. Hypnosis can't make you do anything you don't want to do. At anytime you sense fear or discomfort you can "snap" out of it. It's kind of like being awake and asleep at the same time. However, if you allow it, it has been known slow down your physiology which can cause numbness in your limbs.
What you see on stage is called Stage Hypnosis. Since this is a performance, these hypnotists pick volunteers who appear to be people who want to "play" along.
Nothing about the process of allowing someone to heal themselves naturally is unholy. If anything these fears keep them from truly experiencing this source energy at it's highest and keeps them in a state of limitation. The whole point of clearing your energy field is to get rid of limitations and connect you to a higher source of power -- your superconscious (aka God source) as well as your heart source (aka Christ consciousness). You don't have to give up your beliefs or take a walk on the dark side. Besides, darkness is where illness thrives. So if you are sick or unhappy, it might be time to see the light.
Crystals have been used to help people discover their psychic potential by helping their brain relax deeper quicker, thus dropping them into Theta brain waves much more easily than meditating on your own. Theta brainwaves is the state which you are so relax you operate with your subconscious mind and some claim they can access ESP. Which means anything can be a medium if you concentrate long enough, yes even a bowl of water, mirror or simple sleep.
Also, bad spirits is a subjective subject. Some believe spirits are all around us everywhere we go. Some see spirits as a figment of one's own imagination. Whatever the case may be, fear definitely makes anything around you a lot worse than it really would be. According to the Law of Conservation of Energy, energy cannot be created or destroyed. When we talk in terms of spirit, we really mean one's energy makeup.
Therefore, it's natural when someone dies their residual energy imprint might remain. Some sensitive individuals maybe able to experience these energies as a mystical phenomenon. If you happen to be one of them, rest assure, these energies can't make you do anything you weren't already inclined to do, other than it may travel through air and make some people feel paranoid.
Bad spirits do not enter the crystals and more spirits don't suddenly appear because you're around it. However, you might be able to tap into Theta brainwaves if exposed long enough and you may pick up residual energy at the place of healing, which is kind of cool when you get to experience it. Energy is neither good or evil, it just is.
Energy healing has been used by martial artists and those going into combat to heal quickly on the battlefield for centuries. Since the days of modern medicine, energy healing has become less common. Slowly, however, energy healing is returning and becoming more mainstream as people begin to recognize our psychological and emotional state has a lot to do with how quickly you heal from disease.
An example of energy healing is, for instance, when you were sick and you felt the comfort of someone caring for you. It's their love that help you heal yourself. Since every person has energy when someone is depleted they can either get more energy from food or from other people. Obviously you have to know how to tap into the energy source. For instance, eating healthy foods so your body can transport the necessary vitamins and enzymes, or simply allowing yourself to be touched and held by another person. So you see there is nothing voodoo about energy healing. The level of which someone can lend their energy is a whole other topic. Some people give off great amounts and are able to recharge by themselves better than others, while others never seem to have enough. Also, it is quite natural for two people to feel love and comradery towards each other other in the course of energy work. In that respect, it's quite mystical.