The link below connects to an amazing video of a qigong master doing his work.
He is using the creative force that abides in all of us. He calls it Qi (pronounced 'chee' or 'key') and describes it as a polarity of energy (negative in the perineum and positive in the solar plexus).
As he gets it to move, he brings the polarities together and that creates or rather intensifies the electricity in his body.
Anyone who has opened the internal valve to their raw creative energy will describe it as electricity moving through the body. When it gets fully moving, if the person's internal system (chakras) is not clear enough (thought/emotional stuck points), it can create what appears to be shaking of one's hands and feet. The waves of electricity excite the muscles in pulses as if plugged into a wall socket.
This creative energy is part of every daily experience but it normally flows at such a small rate, it is not noticable. The Chi Master in the video has learned, through meditation, to focus it and control it's direction. He is then able to use his creative energy to heal others.
Throughout most of the video, he is able to remain humble but, as with most of us, eventually gives in a little bit to his ego and has a little fun showing off. The repercussions come quick. His internal Master tells him he has broken the rules of his particular meditation practice and thus needs to withdraw from society and go back into a hermitage to meditate.
This video is truly well a well done demonstration of the amazing power we all have within.
The only difference between this guy and the rest of us is that he took the time to develop his.