Just a little work out

Budapest has such an efficient public transportation service, that you can go practically anywhere without walking more than 10 minutes. Public transportation is run by BKK.  One thing that you might like is that is also very cheap. Even cheaper if you're a student.
It costs 3500 Ft per month, practically 10€.
Public transportation is working 24h around the clock. Are you coming home at 4:00 am from the disco? You can always count on night buses and trams.
I even took Budapest tours on tram. My favourite tram line is n.2, it runs right on the Danube bank, on Pest side. It is possible to admire all the beauty of an urban panorama declared UNESCO World Heritage while going from Belvaros to the end of Lipotvaros. 
With BKK pass it is possible to take ferries, local trains, as well as funiculars, buses and trams without limits. I'm planning a cruise when spring will come... I hope as soon as possible!

Well, given those premises, you might imagine how difficult it can be to remain fit having this practical transportation system.  You don't even have to walk! 
I love to walk. I love to feel the atmosphere of a place on my own skin. To watch people's faces going by. I love to see the beauty even in hidden corners, and smile regardless of what people might think about a smiling girl walking past the street.  Walking is also a great exercise for the body. I do not really like to make a habit of going to work out sweating in some gym. I usually go whenever I want to, and I must admit not very often at all. I don't even love so much to run until my throat is so dry that I can't even speak, although I go much more often for a long run than at gym.  But walking... I love this exercise. I love hiking in the mountains, as I discovered at a very early age when I went camping in Friuli Venezia Giulia. 

Moreover, I always try to walk more than the 20 minutes per day that Dukan recommends in his books. When I started my new life in Budapest as an Erasmus student, I soon discovered that I couldn't always take public transportation if I really wanted to walk at least an hour per day. I had to make an habit that if something is half an hour near, I just walk to reach it.