For 
some people, the ideal vacation consists of sitting by the pool – or on the beach – with a fruity drink in hand and not a care in the world. For a certain segment of the population, however, that’s the definition of hell.
Adrenaline junkies live on the edge — and often like to lean over it. And these days, there are plenty of businesses willing to court them. But while bungie jumping and sky diving might have scratched that itch a few years ago, today’s thrill seekers have a variety of options.
Chris Morris: Journalist 
I”m not sure where everyone get the money to do it in a rough economy, but there is definitely a huge uptick in extreme sports. Beyond the usual rock climbing, bungee jumping or skydiving, I have recently noticed an upward trend in ziplining.