One Mistake Means Certain Death: These Fearless Athletes All Have One Thing in Common, and It Might Not Be What You Think

From free solo rock climbing to jumping motorcycles, it takes a special kind of person to put their life on the line for an athletic feat.

Alone On the Wall

Alex Honnold is the world’s leading free solo rock climber. Free soloing is the act of climbing a mountain or wall without the use of safety gear. This activity is so dangerous that less than 1% of all rock climbers even attempt to free solo anything in their lives.


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The More You Know

  • The longest tennis rally lasted over 12 hours.
  • Dueling is legal in Paraguay, as long as both parties have been registered as blood donors.
  • LEGO has an underground vault with every set ever made.
  • Tennis was originally played with bare hands.
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