Laughing increases serotonin and endorphins in your brain, and smiling releases dopamine that increases feelings of happiness and content.  The power of laughing or simply cracking a smile as you go through your morning and day can have profound positive effects on your mood, stress, and health. Take a look at this incredibly detailed article from Helpguide.org on all the health benefits of daily smiling and laughing and learn how you can incorporate a little more joy into your day :-).