Like this video
Sprinter vs. Marathoner.
This video will not play. You currently do not have Adobe Flash installed on this computer. Please click here to download it (it's free!)
Share this video on Facebook
One Ball: Dog vs. Deer.
How many of you would do this without hesitation?
Floating cube optical illusion.
13-year-old girl brings Simon Cowell and everyone to their feet.
This guy must be a cyborg.
Just weird: Guys vs. Cartoon.
Share on Facebook
more share options...
Belgian animation studio SEEQ explains the difference between sprinters and marathoners when it comes to their overall muscle development. There's a scientific reason why sprinters look muscular while marathoners are taller and skinnier.