Ever notice how, when you go to a fancy restaurant, you'll see something like this on the menu: "Filet Mignon, 54"? Not $54, or $54.00, or even 54 dollars? It's not because the menu maker forgot about currency. Another study by Cornell University found that diners spend less when the word "dollars" or a dollar symbol are used on a menu, says Palinski. By dropping the symbol, restaurants are hoping you'll focus on the food, not the price tag.

Now, take an even closer look at the menu. See that picture of the big, juicy steak? It looks delicious -- and it's also probably the most expensive item the restaurant serves. So why'd they choose that particular entree to photograph? Because you're more likely to order a certain dish when you see a picture of it. Very often, the images on restaurant menus are there because these items cost more than anything else.

And where is that steak picture located? In a prime spot of course. Restaurant menus typically feature the most expensive (and rarely the most good-for-you) entrees in the most eye-catching spots: usually on the right-hand side. This placement encourages you to notice them, upping the chances that you'll order these dishes and drop more cash.

It may seem like a good idea to order a combo meal -- hey, pay an extra dollar or two to add a huge drink, chips, and a cookie to go with your sandwich, why not? But Palinski says you'll only end up eating more and not saving much at all. Loading the menu with "meal deals" is a common strategy for fast food places, and for good reason. Most patrons won't take the time to add up the price of each individual item and see which option is cheaper; they assume the deal is in fact a deal. But in reality, you might end up spending more for a combo, and you'll almost certainly consume more calories by adding on a soda and side.

You know how you practically have to shout at some restaurants in order to have a conversation with your date? It's not because the restaurant owners just happen to love Muzak. Studies show the louder the tunes, the more quickly you'll eat -- and the sooner you'll leave. That means a faster turnover and a higher profit for the restaurant. But while you may not even notice how quickly you're throwing back that burger, your belly will suffer. It takes 20 minutes for the "I'm full" signal to get from your stomach to your brain, so those loud tunes mean you're more likely to end up overstuffed.

Turning up the tunes isn't the only way restaurants try to hustle you out the door. When you're seated, you may find yourself in the awkward middle of the dining room, or perched in uncomfortable chairs. Both of these maneuvers are likely to make you want to shovel in your food more quickly, eating more calories as you go. Remember, if the hostess leads you to a table you're sure you won't enjoy -- like one next to the restroom, for example -- it's OK to request a better location and take your time eating comfortably.

Restaurants like to serve you cocktails before you even crack open your menu. Why? Because alcohol stimulates your appetite. Get your drink on before you order and you're more likely to end up ordering more food -- and probably less-healthy options to quiet your now-growling stomach.