Since I live pretty close to where I work, I decided to walk to work instead of taking public transportation. It takes me about 20 minutes to walk to work, but I think it’s a good exercise. I work in the office and I sit for long hours, so walking for 20 minutes twice a day helps keep my blood circulating. On top of that, I save myself $4 a day from transportation fares.
My primary reason was for the exercise. I did it a few times and liked it, so I walk at least three out of the five workdays.