By Christine Hsu | Dec 21, 2012 09:51 AM EST
Your hands didn't evolve just for the sake of making tools, they're shaped the way they are for you to make a fist to punch others in a fight.
California Doctor Sentenced To 14 Years In Prison For Fake Cancer Cure
Google Glass Features: How Medical Uses Will Revolutionize Your Healthcare [VIDEO]
'Obamacare' Insurance Premiums Lower Than Expected, Two States Announce
Bacterial Meningitis Infections Accelerating Among New York Gay And Bisexual Men
Kim Kardashian's Swollen Feet: Why Does Pregnancy Cause Foot Size Increase? [VIDEO]