A study found even if you don’t feel like smiling, faking one can have positive impacts. Researchers say smiling triggers certain facial muscles which can trick your brain into feeling more positive. The study (University of South Australia) examined participants holding a pen between their teeth, forcing their face to use the same muscles as a smile. The experiment revealed that this movement alters both facial and body expressions, which generates more uplifting emotions. Researchers found when your muscles say you’re happy, you’re more likely to see the world around you in a positive way.