Skydiving (also known as parachuting) is an extreme sport where participants jump out of an airplane at certain altitudes. Skydiving is popular due to the high adrenaline rush it gives and lets participants either jump on their own, in tandem with another person or in a group. Once the plane reaches the desired height of around 13000 feet, the jumper will have 60 seconds of free fall before activating their parachute (http://adventure.howstuffworks.com/skydiving8.htm).
There are many Skydiving competitions, including target landings, acrobatics whilst in free fall, sky surfing with a surf board and group formations (http://www.english-online.at/sports/skydiving/skydiving-an-extreme-sport.html). Skydivers need to have strong fitness and do theory work on wind speed and weather before jumping on their own. It is thought that the first Skydiver Frenchman Andre Garnerin jumped from a hot air balloon in the late 18th century (http://www.english-online.at/sports/skydiving/skydiving-an-extreme-sport.html).
http://www.english-online.at/sports/skydiving/skydiving-an-extreme-sport.html