Yesterday, we talked about switching to a smaller plate to consume less food and potentially lose weight. But what about the beverages we drink? They're a source of many hidden calories. Pina Colada anyone? So, do you want to drink less calories? Here's what to do: Switch to drinking out of a tall, thin glass instead of a short fat one. A study reveals that you can drink more than 50 percent less (actually 57 percent less) from drinking from a tall, thin glass, rather than a short fat one.