Yawning Quiz

Why do scientists now believe we yawn?

• To bring in more oxygen

• To regulate our brain temperature

• Because we are bored

• To increase our heart rate

According to the text, when are we more likely to yawn?

• During the winter

• While we are asleep

• During the summer

• After we exercise

What is one reason mentioned in the text for why yawning is contagious?

• It is a sign of boredom

• It is due to empathy

• It increases oxygen intake

• It is a reflex action

What is one effect of yawning on the body mentioned in the text?

• It helps stretch the lungs and their tissues

• It helps us to digest food better

• It cools down the body

• It helps us to fall asleep