Before making a decision, although friends are convenient and willing, will they make good test subjects (can they be subjective in their responses?).
IF something goes wrong and you cannot put back what you have taken, how will that affect your friend and the friendship?
What happens if what you put back is energy from you and not the energy you took from your friend, so basically you swapped? How will that affect you both or bind you together?
What would you be removing? When you say energy (life force) are you talking about the electro-magnetic energy (aura), electro-chemical, an aspect of the soul or the animating force?
What is the purpose of taking energy? What good will it serve or healing will it promote?
How do you sense the energy, do you see, smell, taste or feel it?
Subjectivity in responses would be a tough one but I would probably ask my sister. We are very close and I can't see her manufacturing responses.
I don't see an issue with giving back to my sister because I already give to her almost on a daily basis due to her sever depression problems. I am one of the only people that can give her peace of mind.
There is a binding in the process but it can be broken with enough concentration I am not sure what state that would put either of us in because breaking a tight bond like that could either feel great and bring relief or the exact opposite making you feel helplessly alone especially if it was already there and you grew up knowing it.
Yes what I am talking about is the electro-magnetic aura that everyone and every thing gives off.
The purpose of the taking is really a tough question. For me the purpose is to find out the extent of my abilities to see how much control I really have over this and if I can direct it in specific facets. I already know I can use my energy to bring people calm and peace but again they need to give me permission and accept it. I don't know if I can take the only time I have witnessed a direct correlated physical response associated with taking is when I get very very angry and it can be truly devastating. <- Thankfully my anger is rare but it usually builds up over a long period of time then I just explode :S.
How do I sense energy humm.. Mostly feel it I can't recall ever seeing an aura but I never really tried. For instance if I go outside I can just feel all the energy around me being almost channeled right too me like I am absorbing it all and it can become quite overwhelming. Same goes for large crowd of people so I tend to be rather anti social because the reaction I get from people are so varied. Not to mention I am rather good at reading people and their intentions just by that energy feeling I get in their vicinity. So far I have not been wrong when it comes to that.
Sometimes I can walk by and someone will glare at me. Other times people become abnormally nervous around me like the instance with my friends girl friend. Then there are some people that are naturally attracted towards me like the sense what the others don't. I have two friends to my name I am rather much a loner lol.