Craving cookies? Find out why.

You had a fantastic breakfast of oatmeal with low-fat milk and berries, a mid-morning apple and almonds, and a salad for lunch. Then 3 pm rolls around and it hits you: those cookies your co-worker brought into the office seem just too irresistible to pass up. You start thinking about them more than your work . . . more than your significant other . . . more than anything that exists on earth. Ever have a craving?

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