We all yawn. Whether we want to or not. We open our mouths and try to swallow air, or at least that is how it seems. But why do we do it? Is it because we need sleep, or are we hungry or bored? Some experts even say that fetuses yawn.
Want to know what’s behind the mystery? Read the full story on MedBound Times!
Very informative. Thankyou. Yawning is really contagious, if you see a person yawing you can’t stop yawing, also if you think of yawing it just happens. The brain feels like refreshed after the yawn.