Eating one piece of fruit could help you eat healthier all week. If you eat it right BEFORE you go grocery shopping! Researchers from Cornell University found shoppers who had eaten an apple beforehand bought 28% more produce than cookie-eaters. They also bought less junk food. The explanation is simple: Once you eat a healthy snack, your subconscious guides you to STAY on a healthy path, with almost zero effort. But remember, the trick only works if you eat fruit right BEFORE you shop.