extreme sports  extreme sports, also known as action sports or
alternative sportsGimpl, Stefan [Credit: Alberto
Pizzoli—AFP/Getty Images]Uemura, Aiko [Credit: Janerik
Henriksson/AP]sporting events or pursuits characterized by high
speeds and high risk. The sports most commonly placed in this
group are skateboarding, snowboarding, freestyle skiing, in-line
roller-skating, street lugeing, and BMX and mountain biking.
Typically, extreme sports operate outside traditional mainstream
sports and are celebrated for their adrenaline-pumping thrills.
Racing and acrobatic competitions for motorcycles and
snowmobiles are also often classified as “extreme,” and the term
can be stretched to include such daring pursuits as rock
climbing and skydiving.  skateboarding [Credit: Pico van
Hourtyve/AP]The primary extreme sports—skateboarding, in-line
roller-skating, and BMX, for example—often make ... (100 of 261
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