NewScientist The Last Word

Wakey wakey Why is it when we are tired the blood vessels in our eyes are more visible?Lucy Bennett(Image: cslcsl, stock.xchng)
Editorial status: In magazine. (1 vote) average rating:3

Categories: Human Body.

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Reply	Anonymous says: I don#39;t know about the eyes drying out, mine start streaming when I#39;m tired, my wife quite often asks me why I#39;m crying! (no votes) Tags: animals, human body.
	posted on 2009-07-05 21:40:31 \| Report abuse

Reply	Anonymous says: It seems linked to non verbal communication. What better way to know the mental, physical and emotional state of a person than look them in the eyes? I think evolution has seen to this. (no votes) Tags: animals, human body.
	posted on 2009-07-09 20:48:31 \| Report abuse

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