13 Surprising Scientific Facts About Siblings

Siblings: They're giving each other noogies one second, then hugging it out the next. Suffice to say, life is never dull with brothers or sisters around. But whether you're raising siblings or grew up with them, what you might not realize is just how much these family members impact our personalities, achievement levels, heck, even our dating and marriage prospects!

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Fascinating facts about siblingsFor more info on how birth order and other aspects of the sibling relationships affect who we become as individuals, see the slew of scientifically based "who knew?" sibling trivia below.

Which facts about siblings surprised you the most?

 

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