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Best & Worst McFlurry at McDonald's

Sometimes froyo won't hit the spot, and your eyes wander to more elaborate ice-cream desserts.

You know that one wrong choice can erase the calories you burned in a workout or two, but there's good news: some indulgences aren't as bad as you might think. Enter the McFlurry, McDonalds' ice cream dessert swirled with M&Ms or Oreos. The right choice can fit nicely into your cheat day; the wrong one can set you up for a cheat week.

Eat This!

Snack Size McFlurry with Oreo Cookies

Calories 340
Fat 11 g
Saturated Fat 6 g
Carbs 53 g
Sugar 43 g

Not That!

McFlurry with M&Ms Chocolate Candies

Calories 650
Fat 23 g
Saturated Fat 14 g
Carbs 96 g
Sugar 89 g

It's no shock that a snack-size dessert is a better choice than its regular-size counterpart, but in the case of the McFlurry, you might be surprised to see how many calories you're saving. Swapping a regular M&M for the one-third-smaller snack-size Oreo version saves you 310 calories, or the equivalent of a cheeseburger or a medium order of French fries!

Mickey D's most consistent McFlurry mix-ins are Oreos and M&Ms, although special flavors pop up from time to time. Surprisingly, the cookies are the better choice in either size. (Putting the snack sizes head-to-head, the Oreo McFlurry has 90 fewer calories and 25% less fat than the M&M version.) Alas, while studies involving M&Ms have taught us various ways to stay slim, none of the conclusions involved scarfing them in McDonald's ice cream.

RELATED: We found the best smoothie recipes for weight loss.

Eat This, Not That! Editors
Inspired by The New York Times best-selling book series, Eat This, Not That! is a brand that's comprised of an award-winning team of journalists and board-certified experts, doctors, nutritionists, chefs, personal trainers, and dietitians who work together to bring you accurate, timely, informative, and actionable content on food, nutrition, dieting, weight loss, health, wellness, and more. Read more