I went to the American Museum of Science and Energy yesterday at Oak Ridge< TN. They have a "human" battery. You put one hand on a copper plate and the other hand on an aluminum plate. Then you can check the meter to see how much current your body is pumping out. I had it up to about "55", but decided to do the feeling exercise, focusing on the energy running through my body. After that the meter went to "80"! I had my daughters try this experiment too and they both raised their body energy by 20 points!