Monday 26 November 2012

Well: Yawning Begins Early, Though No One Is Sure Why

Why fetuses yawn is unclear -- for that matter, it is unclear why adults yawn.

Source: http://well.blogs.nytimes.com/2012/11/21/yawning-begins-early-though-noone-is-sure-why/?partner=rss&emc=rss

example here as example as an example explained here

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