Today we have a better understanding of how laughter affects human physiology. It:

• Reduces pain. Our bodies produce pain-killing hormones called endorphins in response to laughter.
   
• Strengthens immune function. A good belly laugh increases production of T-cells, interferon and immune proteins called globulins.
• Decreases stress. When under stress, we produce a hormone called cortisol. Laughter significantly lowers cortisol levels and returns the body to a more relaxed state.

The other good news is that humor has a positive impact on intellectual and emotional functioning. It:

• Helps put life’s trials and tribulations into healthy perspective by making them seem smaller.
   
• Aids us in overcoming fear.
• Allows us to take ourselves less seriously.
• Triggers our creativity.