I seen some real dandy's with the CSCS cert. personal training at my gym, they have 70 year olds who never trained with weights in their lives doing power cleans, squats where you attempt to jump up at the end of the movement, and a bunch of other horseshit, most people don't need to do. Of course they all went through the same program with the same instructors locally. The CSCS cert is only as good as the person it's awarded to, like any other cert.