Mistake: Eating out of a large tub of popcorn

Going to the movies? A suspenseful film might suck you in - as does a large tub of popcorn. Moviegoers who were given large popcorn containers ate 45 percent more than those given medium containers, the Food & Brand Lab found. Not only that - researchers found this even happened when the popcorn was 10 days old. Big packages encourage overeating, even if the food is stale.

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