Bungee jumping also pronounced as bungy jumping, is an extreme sport that involves a lot of thrill and excitement. It is an activity that includes jumping from a height while connected to a large elastic cord. The tall structure is usually an object that is fixed, it could be a building, a bridge or crane; but it is also possible to jump from a mobile object, such as a helicopter or a hot air balloon. The main thrill of the sport comes from the free-fall and then the rebound as when the person jumps, the cord stretches making the jumper fly upwards again as the cord recoils and keeps on oscillating up and down until all the kinetic energy is evanesced.