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Biology 23 Online
OpenStudy (anonymous):

can anyone tell me why baby is laughing after 2to 8days from birth eventhough they do not know what is happening in front of them.whether smiling is due to theiractiviy or involuntary muscle twitching?

OpenStudy (shrutipande9):

this is an interesting question...we still dont know about that....but my grandmom used to say its because of involutar muscle twitching...

OpenStudy (anonymous):

but do you know any correct scientific reason

OpenStudy (shrutipande9):

umm..not really:(

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