Tres ejemplos de deportes extremos‏

Shanghai Tower 

https://www.youtube.com/watch?v=gLDYtH1RH-U&feature=youtu.be

Sense of flying

https://www.youtube.com/watch?v=ER1PGYe9UZA

Baumgartner

https://www.youtube.com/watch?v=vvbN-cWe0A0