What is Jogging?
[[File:Jogging couple.jpg|thumb|Jogging helps people to keep fit and healthy]] [[File:Villa del Casale - mosaique femme sport.jpeg|thumb|A detail of an ancient mosaic depicting a young woman who jogs with dumbbells, 4th century AD]] '''Jogging''' or going for a '''jog''' is [[running]] at a slow speed. Many people do it to keep fit and [[healthy]]. People go jogging for [[exercise]], not for [[competition]]s. Jogging is a very cheap way of keeping fit, because all that is needed is a good pair of running [[shoe]]s. One can jog anywhere, although it is good to stay away from main roads where the [[air]] is full of [[traffic]] fumes. It is also good to avoid too much jogging on hard pavements ([[sidewalk]]s). A softer surface such as [[grass]] is better for jogging because there is less hard jolting for the [[knee]]s. Jogging is a kind of [[aerobic]] exercise which helps people breathe better. It can keep the [[heart rate]] at a high-speed level for a long time (depends on how long people spend). A goal of aerobic exercise is to train the different types of muscles so people can keep fit by increasing the [[muscle]] mass. Since people increase the muscle mass, they can be successful to increase the lean level and decrease the body fat.<ref>{{Cite web|url=http://livehealthy.chron.com/jogging-affects-body-fat-composition-7872.html|title=How Jogging Affects Your Body Fat Composition|first=Nina|last=Hauptman|website=|publisher=|accessdate=2016-06-10}}</ref> In this way, people can keep fit and be healthy. Jogging and running have very popular in the late [[20th century]]. People of all ages jog. It promotes strength and good condition and is useful to people who want to [[Weight loss|control their weight]]. Like other aerobic exercise, it releases [[endorphin]] in many people.<ref>{{Cite web|url=http://www.weightlossresources.co.uk/exercise/running/road-versus-treadmill.htm|title=weight lose resources|first=Nicola|last=Glanville|website=|publisher=|accessdate=2016-06-10}}</ref> == Locations == Jogging has