[Picture source: http://www.superbwallpapers.com/wallpapers/artistic/compass-on-an-old-map-4461-400x250.jpg]
There are many reasons to record your GPS track. For joggers one would like to utilize useful statistics such as time, speed, distance and elevation to track one's progress (Hence being listed in the 'Health & Fitness' category). For me I use it to record the route I took when driving in new places, so I could review it back later.