Chapter 1
The chemistry of a smile
Chapter 2
The rhythm of the happy dance
Chapter 3
The internal symphony
Chapter 4
Vocalizing the vibe
YOUR GOAL
Master of The anatomy of a happy dance
Ch 1 · The chemistry of a smile
joy The Chemistry of a Smile
Just a little cheek flex sends a sweet rush of dopamine straight to your brain!
joy An anatomical chart highlights involuntary muscle movements signaling delight across the body.
BETA
joy Match physical reactions to discover how the human body expresses different forms of joy.
Fun Fact
The Duchenne smile: It is named after a French doctor who used electrical shocks on faces to map muscles.
Glossary
dopamine (noun)
A neurotransmitter in the brain that plays a major role in regulating movement, emotion, and pleasure. In 1957, Swedish pharmacologist Arvid Carlsson discovered this chemical, which floods the brain when a person smiles.
A neurotransmitter in the brain that plays a major role in regulating movement, emotion, and pleasure. In 1957, Swedish pharmacologist Arvid Carlsson discovered this chemical, which floods the brain when a person smiles.
Quiz
What is the term for a negative reaction to a highly positive emotional event, like crying when happy?
Quiz
Which pioneer of micro-expression research discovered that basic human expressions of joy are universally recognized?
