Yawning: Contagion and Science

The video explores the phenomenon of yawning, explaining that everyone yawns, including animals like fish. Initially thought to be linked to sleepiness or oxygen needs, yawning is now believed to help cool the brain. Yawning is also contagious, affecting both humans and animals. The video encourages viewers to share the content and explore more questions.

What was the traditional belief about why people yawn?

• Due to sleepiness or lack of oxygen

• As a form of communication

• To cool the brain

• To express boredom

According to current scientific understanding, what is the primary reason for yawning?

• To increase alertness

• To signal tiredness

• To cool down the brain

• To improve lung capacity

Which of the following animals is mentioned as also yawning?

• Birds

• Insects

• Fish

• Reptiles

Is yawning contagious among humans and animals?

• No, it is not contagious

• Yes, but only among humans

• Yes, both humans and some animals can catch yawns

• Only animals can catch yawns

What does the video suggest you do to test the contagious nature of yawning?

• Record yourself yawning

• Yawn in front of your pet

• Share the video with a friend

• Try yawning in front of a mirror