If you're wondering why you're tired after a full night's sleep, or jittery even without a venti latte, the answer might be on your plate. "Marginal nutritional deficiencies may make you feel 'under the weather,'" says Elizabeth Somer, R.D., author of "Eat Your Way to Happiness." And eating too much of the wrong things can have the same effect, she says. So if you haven't been functioning at 100%, try these foods to give your well-being a big boost. Read more: http://www.cnn.com/2011/HEALTH/08/12/top.power.foods/index.html?hpt=he_c2