L.I.F.E. is an advanced electro-physiological biofeedback device, which has been rigorously tested and CE-certified throughout the European Union as a Class 2A medical instrument. It is also registered in the United States, Australia, and South Africa as a biofeedback device. The inventor of the system, Chris Keser, is a veteran homeopath who has worked with energy medicine and biofeedback since the 1970's. In this book, Andrea Berger, a certified biofeedback practitioner, describes the L.I.F.E. biofeedback system and several healing sessions with her clients.