Even when taking the escalator, start walking. On the right of course. According to TTSH doctors, walking up two flight of stairs not only burn more calories than a stroll in the park it but Also lengthen the live expectancy by 5.5 seconds. With flights of stairs at every nook & cranny, it's a good reason to pump up the cardio and live longer. Wonder if the effectiveness is the same on going up and coming down. Personally I would prefer coming down 10 storeys than going up.