The Science of Yawning

Front

Emily's curiosity

Back

Investigating yawning

Front

Contagious yawning

Back

Spreads like wildfire

Front

Library research

Back

Book on the human body

Front

Yawning and blood flow

Back

Increases blood flow to the brain.

Front

Feeling awake

Back

Yawning wakes up the brain.

Front

Group synchronization

Back

Yawning keeps bodies in sync.

Front

Science teacher's explanation

Back

Mr. Thompson on yawning

Front

Team action

Back

Group yawning together as a team

Front

Stretching lungs

Back

Yawning stretches lung tissue.

Front

Oxygen intake

Back

Yawning increases oxygen intake.