The Psychology of Extreme Sports, Why We Jump

Inside the world of extreme pogo

Frontiers To Analyze Thrill, Define Extreme Sports

Is It Wrong to Let Children Do Extreme Sports? - The New York Times

Living on the edge with base jumping

Extreme Sports – Pros and Cons –

Extreme sport - Wikipedia

Extreme Sports: Beyond Human Limits

Why Do Some People Enjoy Extreme Or Dangerous Sports?

Why danger is exciting – but only to some people