Interval training is a way of training where one rises and lessens the depth of his workout between aerobic and anaerobic training (KRAEMER & RATAMESS, 2004; Talanian, Galloway, Heigenhauser, Bonen, & Spriet, 2007). Intensive training in Sweden, where some say it originated, is known as fartlek training (Swedish for "quickness play")(Ferraz et al. , 2010). The protocol for intensive training is a well-known way for bettering fitness(Dunham, 2010). Officially,..