Why am I doing this at all?

Ever since I was a young boy, I had always had a slender build.  Skinny, not very muscular, but always active and in pretty good shape.  Senior year of high school, I was a slender 5'9 weighing in at 140 lbs soaking wet.  In college, I spent 5 years eating crappy food, and due to school work and the introduction of alcohol on a regular basis, I had far less time to be as active as I was as a youngster playing soccer 3-5 times a week.  After college, once I started my career, I had even less time, but still continued the same crappy diet.  At the ripe young age of 25, I looked at myself, and for the first time I decided I did not like what I saw.  I had hit 160 lbs, which doesn't sound like much, but all of it was in places I didn't want it, or need it.  Still scrawny arms, legs and chest, minus the development of cute little man boobs bowing down as if introducing themselves.  Aside from playing sports, I had no idea what to do in order to get rid of the unnecessary insulation that was growing on me like a fungus.  Something had to be done, but having no idea where to start, I started where any logical person in this day and age would start: Google.