Anyone who has fallen asleep in front of the TV watching college football on Thanksgiving night would be right to think that something they just ate worked like a sleeping potion. (Hint: It’s not what you think!) The truth is that some common foods you eat (or drink) can send you straight into a “food coma.” There are even some popular pick-me-ups that can leave you feeling sleepy and sluggish once their initial burst of energy wears off. So what are the foods that make you tired? Since fatigue can be a weight loss plan killer—not to mention an obstacle to getting out to exercise—be aware of these energy vampires lurking in your kitchen and pantry: 1. White Bread That’s the stand-in for refined carbohydrate foods . You probably blame your Thanksgiving lethargy on the turkey you ate because of its tryptophan, an essential amino acid that can help make you sleepy. The turkey is pleading not guilty. The real culprit is all those side dishes. A meal that’s high in starchy/sug...