This book explains how relaxation works... it takes patients to read because it was written by a 20th century scientist... but, it works... I taught relaxation using these techniques and students raved about the results... one student was so "zoned out" he was gone to his happy place for over an hour... Once trained you can relax at will... go from stressed to relaxed with a cue... well worth the $2... in fact, it's a gift...You Must Relax