Jumping is an ability that most humans and many animals share to some degree. It is the process of getting one's body off the ground for a short time using only one's own power, usually by propelling oneself upward via contraction and then forceful extension of the legs. In some cases the height of a jump may be increased by using a trampoline, or by pushing down with the arms when playing leapfrog. One can jump up to reach something high, jump over a fence or ditch, or jump down, and one can jump while dancing and as a sport.High jump, where the objective is to cover as large a vertical distance as possible with one jump, preceded by a short run-up. Standing broad jump, similar to the long jump except that there is no run up at all; contestants jump forward after only several swings of the arms.
