How Calories Work

        Health | Weight Loss

For years now, calories have been all the rage -- people are counting them and cutti­ng them, and you'd be hard-pressed to find something at the supermarket that does not list its calories per serving somewhere on the package. But have you ever wondered what exactly a calorie is?

In this article, we'll find out what calories are and why we need them, and examine the relationship between calories and weight.