Tip of the Day: Yup - I get it - I scream, you scream, we all scream for ice cream. But if your ice-cream habit involves a permanent stash of Ben and Jerry's in your freezer, you've got a problem. While an occasional treat won't kill you, eating ice cream every day - even once a week - can be a diet buster. Let's look at how much your favorite indulgence will set you back. Vanilla Ice Cream Calories: 460 for one cup Exercise equivalent: Walking, biking, or running list of 3 items Walking: 103 minutes Biking: 49 minutes Running: 49 minutes list end Walking two hours makes that ice cream less of a treat, doesn't it? You can still have ice cream from time to time, but look for low-fat varieties and keep your portion sizes to no more than a half cup.