Have you heard about lucid dreaming and Astral Projections? If not, then let me elaborate what lucid dreaming is so as astral.
Lucid dreaming is when you are dreaming but you are aware of it, your senses are still working and aware of your surroundings that you are dreaming. You can control the situation, events and characters on your dreams.
One of my weird friend added me to an fb group before named, "Astral Projections" lucid dreaming and astral projections are a little bit similar because you are dreaming with awareness but Astral needs more practice and it is more creepy than lucid dreams. In that group people share their techniques how to start lucid dreaming and astral projections. They also shared their experiences, seeing spirits and will advise you not to be scared by them. They also said that before doing astral or lucid you have to strengthen your faith and pray before you do it. That friend of mine, even told me she already knows I was pregnant when I told her I am. That was way back two years ago, as she sees me pregnant while doing this things. She even told me to give it a try, but I didn't do it. I'm so f*cked up with my life then here's this things add on my burdens like naaaaah! I didn't do it because I was full of negative energy way back, when you have so much negative forces you will probably attract evil spirits more. So creepy and scary lol.
In lucid dreams you can have a sweet dreams, you can visit other people and places. Your expectations materialize and works on your favor while Astral is something like going to another dimension of the world, a spirit world. Seeing creepy spirits and the likes, actually sleep paralysis is the beginning of astral projections as it begins with creepy surroundings and seeing creepy figures.
If you able to control sleep paralysis, you will have the ability to do astral projections. You see your soul leaving your body and starts wondering. But this is not advisable to anyone who doesn't know how to do it, this is also dangerous because you might not able to come back. Just refer to the movie "Insidious" it tells about the boy who is good in Astral projecting, but went to coma because his soul can't comeback because there are a lot of evil forces wants to get inside his body. It is believe to be dangerous as you will mingling evil entities, your thoughts are your guide in doing this your expectations could be a major hindrance both concious and unconscious.
So be careful on what you do or when you are dreaming, you might never know you start doing these things. There are a lot of unexplainable things scientifically, weather it's a fact or a myth we still have to be careful.