I am a certified personal trainer from ifbb, and an ER doctor. I downloaded the ACTION MANUAL FOR PERSONAL TRAINER to know what must known to pass the exam. I took the exam and passed. To pass this test you must learn basic anatomy & physiology of the human body, biomechanics etc. This is very good course to build professional personal trainers. The ACTION pt manual covers everything you need to become true personal trainer. I recommend that everybody who wants to be a personal trainer to start learning ACT.