Registered dietitian Stephanie Clarke said that while a smoothie can be a filling, nutritious, quick breakfast, because it tastes like melted ice cream, it's easy to accidentally sip down 800 calories in under five minutes. Your brain doesn't have time to register that you ingested that many calories, and you'll soon feel hungry afterward. The same goes for high-calorie beverages like soda, fresh-pressed juices, and cocktails. If you want to satiate your hunger, chew your calories instead of drinking them.
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