Victor Sanchez expands on the idea of recapitulation outlined in Carlos Castaneda's book, The Eagle's Gift (1981). Sanchez has many years of research experience with recapitulation: the bodily remembering of powerful events in a person's past that have damaged the energy body. By having the body remember, a person is able to challenge the routine (doing) of simultaneously maintaining and suffering from that original damage. Through the process of recapitulation, which includes creating a list of events to be remembered, building a recapitulation box, and then completing the "not-doing's" en-visioned through the recapitulation process, any individual (Sanchez says people with clinical mental illness or bad drug habits ought to not recapitulate) can heal their energy body - which Sanchez says is a natural process that humans generally tend to ignore, forget and neglect.