A large (32 oz.) Coca-Cola will set you back a little over 310 calories with 20 milligrams of sodium and 86 grams of carbohydrates from sugar. That's more calories than a regular four-ounce McDonald's cheeseburger. Instead, order milk, juice, ice tea, or water. And if you're in the mood for a shake, consider a smoothie or slushy (real fruit is preferable).

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Healthy Dessert Options

Order fruits for dessert rather than ice cream, cookies, or pies. Order yogurt when possible; the active live cultures in yogurt are very healthy and they introduce "friendly" bacteria into your intestinal tract.

An occasional meal at a fast-food restaurant doesn't have to be daunting for dieters. So long as you focus on healthy alternatives, the impact on your current diet plan should be minimal.