Try reading this. It's a great article. http://www.moreintelligentlife.com/story/life-wish

When you do dangerous things you get an adrenaline rush. People have do more and more dangerous things to get a larger rush each time.

Maybe he/she likes to feel in the risk.

As normal I don't not try something dangerous.I am a reasonal person ,I will not do the dangerous things although it attracts me a lot. I think the reason people are attracted to dangerous sports or activities is that we donot it offen in our life, we are curious to do something different ,to experence new things.

These dangerous sports or activities permit you to know your strenghts and weaknesses and above all overcome your limits. Thanks to them you feel alive and stronger. Besides, be attracted by dangerous sports or activities don't mean your crasy or careless because you can be well-equipped and inform about risks. Moreover, some motivations like money or glory can attract some people to do something dangerous.