Sports:  An active diversion requiring physical exertion and skill, sometimes governed by a set of rules or customs and often engaged in competitively.  Some modern sports evolved from ancient surival activities such as spear throwing, canoeing, swimming.  Other sports became popular with the inductrial revolution.  With the migration of Americans from farms to cities, there was more time and less space and jumping rope became a common pastime.  Presently jump rope is not only fun but serious competition says the US Amateur Jump Rope Federation.  An event is hosted every year called "Jumo Rope For Heart".  How many jumps can you do in a minute?  How fast does your heart beat after 30 jumps?  How many calories have you burned?  Maybe you need our handy Digital Jump Robe!