When you smile, your brain releases tiny molecules called neuropeptides to help fight off stress . Then other neurotransmitters like dopamine, serotonin and endorphins come into play too. The endorphins act as a mild pain reliever, whereas the serotonin is an antidepressant. https://www.sclhealth.org/blog/2019/06/the-real-health-benefits-of-smiling-and-laughing/#:~:text=When%20you%20smile%2C%20your%20brain,the%20serotonin%20is%20an%20antidepressant. It turns out the benefits of smiling aren’t just limited to yourself — it can also affect those around you too. We’ve already talked about how our brains react when we smile, but we’re also rewarded when we see someone else smile too! The reward center of our brain is activated and it makes us feel a little better. Plus, one Swedish study suggests that we can’t help but react with a smile of our own when we see someone smiling — so it’s an all-out infectious loop of happiness. Happy in the Face, Boss in the Wor...