Goodnight/morning robinsandy you should applaud yourself are u aware you answered your own question before you asked it-you see that's exactly what yawning is a chain reaction once 1 person does it somehow involuntarily someone else just gets into it-it's like when you are smiling at a baby have you ever noticed how for no reason they also smile-it's just a case of involuntary reactions to an action-now this is not to be confused in a case where one person passes wind and another does also-that's a definite case of you ...

Goodnight/morning robinsandy you should applaud yourself are u aware you answered your own question before you asked it-you see that's exactly what yawning is a chain reaction once 1 person does it somehow involuntarily someone else just gets into it-it's like when you are smiling at a baby have you ever noticed how for no reason they also smile-it's just a case of involuntary reactions to an action-now this is not to be confused in a case where one person passes wind and another does also-that's a definite case of you better check your pants you might just need to go to the bathroom-do take care God Bless b safe ok

Because a yawn is a signal to the a person that it’s time to go to sleep. Or if someone yawns when they’re bored, it may be a sign to change the topic of conversation.