"Guy's Grocery Games," airing on the Food Network, is a high-intensity contest in which players search grocery store aisles and create an instant dish.

While host Guy Fieri may be determined make the contestants' supermarket experiences a little more manic than usual, just an ordinary shopping trip can be very challenging if you're trying to figure out what to buy that's super-tasty and super-healthy.

There are intriguing new studies that could revolutionize your grocery shopping, putting you on the road to a healthier diet and helping you shed extra pounds.

Tasty trick No. 1: Eat a healthy snack BEFORE you hit the aisles.

The Cornell University Food and Brand Lab recently found that people who ate an apple before shopping bought 28 percent more fruits and vegetables than those who ate a cookie.

Apple-eaters also opted for a healthy food choice (when presented with one healthy and one unhealthy option) 66 percent of the time, and made similar healthy selections after drinking a "healthy" beverage.

Having a healthy snack to prompt other healthy food choices is called "priming." You can prime yourself by snacking on an apple, some fresh berries, or 12 walnut halves before you head to the grocery store.

Tasty Trick No. 2: Make a shopping list.

A recent study from RAND Health found that folks who shopped from a grocery list weighed less than "free range" shoppers, who are more likely to go for unhealthy impulse purchases like desserts or fatty snacks.