We all turn to the freezer once in a while when we're looking for a quick dinner, but how do you know which frozen food meals will satisfy your hunger and keep your calories in check? David Zinczenko, the best-selling author of Eat This, Not That shares his tips for stocking your fridge!

Healthy Choice Grilled Chicken Marinara vs. Healthy Choice Sweet and Sour Chicken "Here's the thing, 'healthy choice' and sweet and sour - these terms don't go together," David says. "Sweet and sour basically means it's loaded with sugar, so in this case you're getting 20 grams of sugar that you don't need. We're already getting 87 grams of added sugar a day in our diets on average, if you can avoid that and go with a healthier option from the same company that's what you should do," he says, suggesting the Grilled Chicken Marinara as a lower-calorie option.

Bertolli Grilled Shrimp Penne and Cherry Tomatoes vs. Bertolli Chicken Alfredo and Fettucini These skillet dishes may both be Bertolli, but the calorie count is quite different: The alfredo is 630 calories while the shrimp is 340. "This has 1/17th the saturated fat as the fettuccine alfredo ... you should only get 20 grams in a day so you shouldn't get to 85 percent in one dish," David says. "The wrong skillet meal will make a vast difference in the size of your belt, so be careful!"

DiGiorno Crispy Flatbread Tuscan Style with Chicken vs. DiGiorno for One Traditional Crust Four Cheese Pizza When picking pizzas, if you're looking to lower your calories, go for the flatbread. "What we're talking about here is 280 calories vs. 720," David says. "DiGiorno for one? It's really for two ... Flatbread is code for fewer carb calories, so if you go with traditional crust you know you're going to have a lot more carb calories. You go with four cheese? Just call it four chins, it's much better to go with this healthier pizza."

Kid Cuisine Campfire Hot Dogs vs. Kid Cuisine All Star Chicken Breast Nuggets While you might think the chicken meal would have to be the healthier option, David says this is a classic fake-out! "The chicken nuggets have 400 calories, the hot dog has 340!" he says. "The hot dog is great, it's like built-in portion control."

Ore-Ida Steak Fries vs. Ore-Ida Crispers! At 110 calories a portion the steak fries are half as fattening as the crispers, which pack 220 calories a serving. "Crisp is basically code word for, 'We have given it a bubbling hot oil bath,' and it usually means trans-fats which, again, you want to avoid."

Weight Watchers Smart Ones Pizza Minis vs. Three Cheese Bagel Bites from Ore-Ida While the Weight Watchers product may sound more dietetic, it's actually 270 calories a portion vs. 200 for the bagel bites! "This is why you need to read the labels," David suggests.

T.G.I. Friday's Mozzarella Sticks vs. T.G.I. Friday's Cheddar and Bacon Potato Skins When snack time calls, David says try the potato skins at 210 calories vs. the 300 calorie mozzarella sticks. "You're not saving a lot, it's about 90 calories, but again, it's about 10 pounds over the course of the year if you make a swap like that every day."

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