Boost your mood 

Increases positive thoughts

Drawn to people

More likable than people who don't smile

Build and maintain better relationships with people

Positive emotions have more stable marriages

Better interpersonal skills than people with negative emotions

Create stronger, healthier social bonds

Smiling and positive emotions are associated with increased life spans

Smiling and laughter causes an initial increase in heart rate

Period of muscle relaxation and a decrease in heart rate and blood pressure

Reduce your risk of developing heart disease.

Smiling is the best medicine.

Release positive thoughts that release signaling molecules in your brain that fight stress
and illnesses

Increases immune responses in women who have just had babies

Smiling, whether feeling happy or not, helps your body deal with stressful situations
more effectively

Smiling can result in a lower heart rate during stressful tasks

A smile when stressed provides you with both psychological and physical health
benefits.

Causes your body to release its own natural painkillers

Social smiling & laughter increases your pain threshold, creating a higher pain tolerance