If you've set a JooJoo on anexercisebike rack to watch some video or placed the iPad in Apple's keyboard dock to compose some extended text, then a pound won't make much of a difference.
And the fact that the lack of effort involved means you have to wrap up warm - or get very cold - serves as a reminder as to how much less exercise riding an electric bike involves.
Though staging a new race is a huge challenge, Tamarro is an experienced organizer of 10Ks, so he knew how to calibrate the mileage, a tedious exercise that requires riding a bike and counting notches on a clicker.