2) Second theory, One person said that it can be done without any consent. All you have to do is wait for the person to sleep. Go over and get inside their body. Don't know if their making it up?
Our higher selfs (souls, higher consciousness, actual selves or call it what you like) never sleeps, doesn't need sleep or rest.
It "is" our being, our energy, the "I am" of who we are. No one, other energy, soul or consciousness can enter anothers vessel without consent. We can "share" energy, join together, use it, barrow some, and even steel it (some poor sap who allows it to be taken...but, even on some level knows it is happening)
That is not to say that one cannot be influenced by another. I believe we are influenced in the physical as well as in the astral. But, we are still "aware" on a higher level of what is happening.
Even someone that appears to not be aware of anything, has a higher consciousness that has all the answers for them and guides them...
Just my beliefs and or inner knowing...which are still just my beliefs (lol)
Welcome to the forum...we like peeps that make us think, and that you have!