You should never go shopping for groceries on an empty stomach because it influences your food choices. It’s been proven to increase the risk of giving in to junk-food temptations. Which can cause frustration and regrets of having given in to those cravings. To prevent that from happening you should always eat a healthful snack before you go shopping. It been confirmed by researchers that shopping while hungry does influence what you buy and makes it more difficult for you to avoid junk-food and sweets.