What's the single most common complaint in old age? If you can't remember having read this before, then likely you've already got it -- a problem with memory. It's nearly universal at a certain point in life. So, I decided to start working on this whole issue by memorizing lots of stuff. Maybe it's like a muscle, I surmised. Use it or lose it.
The idea behind CrossFit is a good one -- it promotes community, the importance of strength training, compound movements, and even healthy competition. The reality of it creates grey areas, and practitioners definitely haven't seen a reduction in patients since the emergence of CrossFit hype in the real world.