Extreme sports

I think extreme sports are a way out of stress and pollution that exist in some cities, to see the country where do extreme sports.
Extreme sports for all kinds of people from children to seniors, such as canopy, surfing, diving, bungee and other.
Although some extreme sports are dangerous, all have their security measures to avoid something bad happens or any accident.
Almost all these extreme sports are expensive, the extreme sports is fine materials to prevent accidents or are for a specific place.
Extreme sports are practiced in the desert, sea, mountain, air, snow or just in the streets, anywhere you can practice different sports in the world.