Just listening to a fantastic podcast of an interview with Susan Powter, who was talking about the detrimental effects of modern "food" on people emotionally and spiritually. My thought was that if what she was saying is true, and I believe it is, then good eating habits must also be good for my students, so I did a little digging.
Eat more good fats
Eat less salt (high levels decrease brain function)
Eat breakfast (just Google "effects of breakfast on leaning." I got 14,300,000 hits.)
Eliminate refined sugar
Eliminate white flour
And if it's good for our students, then it's good for the teachers, too.