I don't know about you, but I have been a trainer for quite some time and somehow they knew that? It appears they only contact people with a massive amount of professional experience and not just anybody with a heartbeat and biceps muscles (like some places I have worked for). The combination of their philosophy to help rid the industry of uneducated trainers and their efforts to improve the industry is why I decided to finally take the exam. Which, by the way is free and you are not required to buy a study book. This notion that they want you to buy a book for the exam is ridiculous because everyone they contact has a shitload of professional background and we all have already taken certification exams before. I suspect they expect us to already know this stuff, after all, we have been teaching it for a long time, at least I know I have. There are no purchase requirements, which rules out any theory that they want you to but anything. Even though it is not required, I think it would be smart to brush up anyway. I've heard their study guides are supreme and my books are getting old and outdated.