Going to the grocery store on an empty stomach is akin to being that proverbial kid in the candy store. Before we know it, half the cart is loaded with cheesy cracker snacks that our typical carb-conscious selves would at least try to resist. But we never knew that the type of food you eat before going on a grocery trip could have just as much influence on your purchases as shopping on an empty stomach. Researchers at Cornell University tested this experiment by having participants eat an apple sample, a cookie sample or nothing at all prior to shopping. The result? The apple-snacking shoppers bought 28 percent more fruits and veggies than the cookie eaters and 25 percent more than the shoppers who hadn’t eaten. Do you think munching on an apple can have this much of an effect on your purchases? Give it a try the next time you head to the store.