![Runner Things #2879: Funny Running Posts [21-40]](http://www.fuelrunning.com/quotes/wp-content/uploads/2014/08/funny-running-posts-21-40-title.jpg)
![Runner Things #2878: Funny Running Posts [1-20]](http://www.fuelrunning.com/quotes/wp-content/uploads/2014/08/funny-running-posts-1-20-title.jpg)
A simple, moderately severe sunburn damages the blood vessels extensively. How extensively? Studies have shown that it can take four to fifteen months for them to return to their normal condition.
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