This link will take you to the Crossfit Journal Preview of this article. The CF Journal is 25 bucks a year, the link is on the right of the page, its worth it.
If you had a million dollar race horse, how would you treat him? Would you keep him up all night drinking booze and smoking cigarettes? Would you feed him a diet of the cheapest grain on the market? If you liked your horse and you wanted him to perform well, you would feed him the best you could afford. You would make sure he had a nice place to sleep and was well rested.
You are the race horse
–Zig Ziglar (paraphrased)