• Mamas, don't let your babies grow up to be BMX riders

    Sure, these guys look really cool, but do they have health insurance? Ouch. Watch as they soar (and crash.)

    Christophe Ena / AP

    Cyclists compete in a BMX cycling men's quarterfinal run during the 2012 Summer Olympics in London, Thursday, Aug. 9, 2012.

    Carl De Souza / AFP - Getty Images

    Colombia's Carlos Mario Oquendo Zabala takes a spill during the men's BMX cycling heat on Aug. 9.

    Matt Rourke / AP

    Brazil's Renato Rezende leads the pack during a quarterfinal run on Aug. 9.

    Sergey Ponomarev / AP

    Ecuador's Emilio Andres Falla Buchely and Brazil's Renato Rezende, right, on the track after a collision during a quarterfinal run on Aug. 9.

    Olaf Kraak / EPA

    Competition during a quarterfinal run on Aug. 9.

    Bryn Lennon / Getty Images

    Quentin Caleyron of France falls at the lip of a jump during a quarterfinal run on Aug. 9.

    Matt Rourke / AP

    Cyclists compete in a quarterfinal run on Aug. 9.

    More Olympics pictures on PhotoBlog

    Slideshow: Olympics Emotional Moments