National Smile Power Day is celebrated on June 15 and was founded by The Smiley Company. This day encourages individuals to showcase their smiles, which are associated with happiness and emotional expression. Smiling triggers the release of endorphins, promoting feelings of relaxation and confidence, and can positively impact both the smiler and those around them. Activities to celebrate include smiling at oneself in the mirror, sharing smiles with strangers, and engaging in fun events like organized smile-offs or enjoying smile-themed treats. The observance highlights the health benefits of smiling, such as lowering blood pressure and reducing stress, while also fostering connections between people. Overall, National Smile Power Day serves as a reminder of the power of a simple smile to enhance well-being and spread joy.