If and when you tally up your calories at the end of a meal or a day, do your calculations take into account what you drank? Do you remember to include that can of soda, smoothie, cup of latte, or cocktail? People tend to guzzle their calories and it really adds up, often more than they realize. For example, that can of soda you drink each morning is the calorie equivalent of a piece of fruit and a slice of toast, about 150 calories. A smoothie can run up to an extra 500 to 1,000 calories despite all the good stuff added in, and a 16-ounce latte with whole milk packs 260 calories. The average margarita — my favorite — has more than 500 calories. What's more, the brain doesn't seem to register liquid calories as accurately as calories that are chewed, and it doesn't send stop-eating signals to keep you from eating more food. If you're taking in only 1,200 to 1,500 calories a day, save those calories for food. Liquid calories add up quickly, so stick with water and calorie-free beverages, and you could lose a pound or more a week. I lost 5 pounds last month because I decided not to have a cocktail periodically with friends.