Between PR pressures and new legislation, restaurants are looking at a new metric: calorie counts per transaction. The rise of healthy eating means the fall of super-sizing, and fast-food chains have found themselves scrambling to introduce more items (think breakfast) and healthier options (like salads and smoothies). Of course, any change that erodes sales for some restaurants means a competitive advantage for others: a study found that when similar legislation was introduced in New York, revenue increased 3% at Starbucks stores where a Dunkin Donuts was nearby. Before these laws go into effect, restaurants have the opportunity to test out how and where calorie information will affect consumer preference. Those who do will be well-positioned to steal market share – and may stumble on the newest healthy trend in the process.