Jogging is a popular form of exercise and recreation in which a person runs at a steady, moderate pace. The actual pace depends on the individual's ability, but it should be one at which the jogger can talk without becoming breathless. Since the mid-1960's, millions of people in the United States and other countries have started to jog. The popularity of jogging stems from its healthful benefits and its simplicity. The only equipment needed is loose clothing and well-cushioned, flexible shoes that fit properly.