Have you ever heard the saying, "It's all mental," in reference to weight loss? A study from Arizona State University shows us that a simple mental trick can help you cut calories. SHAPE editor-at-large Bahar Takhtehchian tells you how doing this simple action could help you eat 40 percent less—without even noticing!
RELATED: Making small changes goes a long way! Click here for 31 easy, quick tips that will make you healthier and happier.