I wonder about that too. I work part time in a gym and to be honest some of the PT's and trainers there are just so damn stupid it unbelievable. Imo if you work in a gym a simple understanding of the exercises and nutrition is all you need to do a semi descent job but for some this is already too much. But hey its biceps that counts not the brain because the guy with the biggest biceps in the gym can tell whatever he want and peopel believe him.
There are Two Types of Pain in this World: The Temporary Pain of Discipline, or the Permanent Pain of Regret!