Exercise is the working of a muscle or muscle group with the intention of increasing muscle mass and strength or endurance. Exercise comes in two forms, aerobic and anaerobic. Though in practice it is impossible to completely separate the two forms. Retrieved from "http://athletics.wikia.com/wiki/Exercise?oldid=2083" Ad blocker interference detected! Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.