When you see a photo of supermodel Gisele Bundchen gobbling a slice of pizza before hitting the catwalk or Will Smith spooning lunch into his mouth as he walks down the street, they seem like regular folks doing just what you do: eating not-so-good-for-you snacks on the run.

Surveys show that most people grab and go three or more times a day, often instead of having a nutritious meal.

Around 19 percent of North Americans' total food intake comes via dashboard dining, and we bet that just as often you're munching a snack as you run around the office or home, or even outside.

Put down that on-the-run snack!

A new study from the United Kingdom found that women who snacked while walking later ate five times as much chocolate as women who snacked while watching TV. And eating in front of the TV already has been shown to trigger excess eating at your next meal!

So why does eating while you're running around stimulate hunger? Seems satiety and satisfaction come from a combination of calories and food memory, and you don't make tasty memories when you're preoccupied with walking and not concentrating on what you're munching.

Instead, choose mindful eating, which means recognizing when you're hungry — and when you're not.

When you do eat — whether you're brown-bagging it or having a sit-down family dinner — give each bite your full attention. Experts say that this simple act may reduce the amount of food you eat by one-third.