Immune System

• Smiling helps you to relax, which also helps the immune system function better.
  
  

Blood Pressure

• Smiling reduces blood pressure.
  
  

Mood

• Smiling increases the production of endorphins, which are natural pain killers, and serotonin, which elevates your mood.
  
  

Brain

• Smiling reduces muscle tension and mental stress, keeping your brain alert.
  
  

Stress

• Smiling has been proven to reduce stress.