Part 1. (IJHC January 2003) This dissertation examines psycho-energetic (bioenergy) psychotherapy, the anthropological and scientific/medical validity of bioenergy as a construct, and three psycho-energetic therapy paradigms with mature theories and interventions. Paradigms discussed include pre-psychodynamic (Christian), psychodynamic (Pierrakos, Lowen, Brennan), and post-psychodynamic (Confluent Somatic Therapy of Steven Vazquez) psycho-energetic psychotherapy . Part 2: A phenomenological study explores psycho-energetic experiences common across three highly advanced psycho-energetic psychotherapists. The study isolates common psycho-energetic experiences, qualifies and describes/interprets them, and recommends a technical vocabulary to formalize them. (Part 2 published in this issue, IJHC Volume 3, No. 2, May 2003)