Eating properly is such a critical part of training, this we all agree with. But a big debate regarding eating arises around pre-fasted cardio - to eat or not to eat before cardio in order to lose body fat and preserve lean muscle.
Check out this article from T-Nation on the topic and let me know your thoughts in the comments and about your personal results and experiences. The basic premise of the article is that fasted cardio is doing nothing good to keep your gains and lose body fat unless you're using performance enhancing drugs.
And if you're wondering about the scientific basis for the claims Christian mentions in the article, here's some source materials if you want to dig deeper: