Nick Ortner, author of The Tapping Solution, explains in this video how Tapping/EFT (Emotional Freedom Technique) works. About 15 minutes into the video, he leads us through a tapping activity.
Tapping is healing because it sends a calming signal to the amygdala, the flight or flight response center. Then we can clear out stresses and pain from the past. When I do tapping, I often release tears. Tears are an expression of stress released from the body.