...getting a subscription to the CrossFit journal to all my clients and anyone for that matter who takes their health and wellness seriously. Its $25/year and it is an absolute wealth of info on all things CrossFit.... a broad subject indeed! I don't believe there is distinction between mind and body - they are one and the same. But you must get good information before you can optimize the results which are possible with our demanding and comprehensive regimen. Much of what we acheive is dependant on learning about better movement, food and sleep concepts.
If $25/year is too much for you, at the very least spend some time navigating around and reading/watching videos on http://www.crossfit.com/. Its free and time well spent!