When I'm going to work. I'm trying not to sweat my balls off... So I ride at a not so slow but steady pace. As a part time "Roadie," All I'm thinking about is simply going fast. Making that bike move as fast as I possibly can. And I'm always thinking about how I can use the decend to appropriately attack the next hill. There is a lot of concentration involved sometimes... and I can see how those walkers/joggers/rollerbladers can annoy roadies.