All thoughts first enter your system as energy. Each conscious thought (and many unconscious ones) generate a physiological response. Those that carry emotional, mental, psychological, or spiritual energy produce biological responses that are then stored in your cellular memory. Your biography is woven into your biological system. According to energy medicine, human beings are all living history books. (Myss, Caroline, PhD. Anatomy of the Spirit. CA: Three Rivers Press, 1997. All.)