January 25th, 2014 - Dr. Kyl Smith discussed his new book: The Testosterone Switch

January 25th, 2014 - Dr. Kyl Smith discussed his new book: The Testosterone Switch. He taught men (and the women who love them) 3 vital steps to improve their vitality, motivation, mental performance as well as sexual function. Long-term health factors involved in optimizing testosterone levels include reducing the risk of death from all causes.