1. Sweet Sips and Soda

Plenty of sugar here—and soda is only part of the problem. Sweetened teas and some energy drinks can pack up to 50 grams of sugar in each 16-ounce bottle. You get plenty of refined carbs without any nutrients. The American Heart Association sets the maximum amount of added sugars per day at 37.5 grams (or 9 teaspoons and 150 calories) for men; and 25 grams (or 6 teaspoons and 100 calories) for women.

2. Cakes, Cupcakes and Cookies

They may taste good, but underneath that taste lies the reason for it: refined flour, added sugars, trans fats and saturated fat. (An interesting note on trans fat:  While the U.S. Food and Drug Administration has ordered manufacturers to remove all trans fat from their products, they have three years to comply. In the meantime, you'll want to avoid foods loaded with trans fats. Trans fats are used to enhance the taste and texture of foods, and make them last longer; but they increase your risk for many chronic diseases. A product can list 0 grams of trans fat on its label if there's less than 0.5 grams—but even that adds up over time.)

3. Breakfast Sandwiches

If you make your own at home, you can use healthy ingredients, but don't assume the frozen varieties are similar. Typically they contain at least one gram of trans fat, plus they are packed with sodium, low in fiber and high in fat. Read what Consumer Reports has to say here.

4. Movie Theater Popcorn

There's nothing wrong with popcorn; in fact, it's a healthy whole grain that offers fiber and antioxidants, to boot. But, there's popcorn—and there's popcorn. If you're heading out to the movies, beware: A bucket of popcorn can contain as many calories as a hamburger plus a Quarter Pounder AND a Big Mac at McDonald's, reports the Center for Science in the Public Interest. It adds that the popcorn is "essentially fried in one to three days' worth of saturated fat," depending on the size you choose. And what about those buttery toppings? As if you didn't already get enough, these will add 130 calories to a small popcorn, 200 to a medium and 260 to a large, reports movie chain Regal.

5. Canned Soup

It might come in handy if you're pressed for time, but unless you find a tasty variety that's low in salt (and there are some out there), you're out of luck on the health front. An average cup of a popular-brand soup, for instance, packs over 800 milligrams of sodium. Keep in mind that's an "average cup." Most people consume the entire can, which brings the sodium to over 2,000 milligrams—more than you should consume in an entire day.