Yawning often occurs when someone is bored or tired, as it is a way for the body to increase oxygen intake and wake up a bit.
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MCQs
1. What does yawning help increase in the brain?
A) Carbon dioxide
B) Oxygen
C) Sugar levels
D) Blood
Answer: B) Oxygen
Explanation: Yawning helps to increase oxygen levels in the brain, making us feel more awake and alert.
Related question you should know: What does my brain do?
2. Can yawning be contagious?
A) Yes
B) No
Answer: A) Yes
Explanation: Yawning is known to be contagious. Seeing, hearing, or even thinking about yawning can make you yawn.
3. Why might someone yawn during exercise?
A) To cool down the brain
B) To signal they are giving up
C) Because they are bored
D) Because they are confused
Answer: A) To cool down the brain
Explanation: During exercise, the body’s temperature rises, including the brain’s. Yawning may help to cool down the brain.
Download Free Mini-break Exercise Flashcards
4. What can a yawn do for your ears when you are on an airplane?
A) Nothing
B) Make them hurt more
C) Help equalize ear pressure
D) Make you hear better immediately
Answer: C) Help equalize ear pressure
Explanation: Yawning can help equalize ear pressure, relieving discomfort during changes in altitude, such as when taking off or landing in an airplane.
Do you know: Why your ears pop?
5. When do humans start yawning?
A) After they are born
B) When they turn one year old
C) While they are still in the womb
D) When they start to walk
Answer: C) While they are still in the womb
Explanation: Humans start yawning even before they are born. Ultrasounds have shown fetuses yawning in the womb.
6. What is NOT a reason animals might yawn?
A) As a sign of aggression
B) To show they are happy
C) To cool their brains
D) As a response to seeing others yawn
Answer: B) To show they are happy
Explanation: Animals yawn for various reasons, including as a sign of aggression, to cool their brains, or due to the contagious nature of yawning. It’s not typically a display of happiness.
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