Hadn't ridden a bike in years and started riding my dad's old aluminum trek roadie for a means of transportation and fitness around the city (DC). This lasted for a year and then I began noticing that the best riders--those with the most control and grace--all rode fixed. Watching messengers skip-skid-stop over metro grates and in and out of the way of pedestrians was truly a thing of beauty. Bought a second hand track bike and have ridden it everyday since for the last year. It has become an obsession.