Keep sugar and caffeine -- the "legal evils" -- to a minimum. It's hard to believe, but decreasing sugar actually increases people's energy, by minimizing the highs and lows that sweet foods triggers. Different people react differently to caffeine, but most of us are probably overstimulated already -- adding a stimulant just adds to things like road rage.
-Dr. Nancy Norman, medical director of the Boston Public Health Commission
(AP Photo/Winslow Townson)