Veggie Tables

So I'm sitting at work attempting to do anything BUT work...haven't eaten lunch yet and I'm STARVED...thinking about what I would like to eat the following came to mind:

Black beans
Steamed zucchini
Raw broccoli
Creamed cauliflower
Steamed broccoli

.....I never crave veggies like this. I crave meat (no pun intended) so if anybody is into explaining the medical reasoning as to what it means when the body triggers the mind to want a certain food group...could ya drop me some knowledge?

Thank ya kindly
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