One of my favorite things to do is walk. This is something I had to have picked up from my grandmother, who would take me into downtown San Francisco as a child. She never could drive due to her eyesight, so we used SF's unreliable transit system to get around. But buses don't go down every street, and sometimes it's easier (and nicer) to just walk from A to B.
When I lived in San Francisco as an adult, I went out almost every day for a walk. I took a bus or the streetcar to somewhere I hadn't been or somewhere I enjoyed visiting before, and just walked. City walks remain my favorite, but I love getting out into nature, too.
For that, I probably have to thank my mom. My memories of visiting California's countryside involve her, going up into the mountains of Yosemite or out to the redwood forests north of the Bay Area. Most of my travel as a younger adult focused on cities, but I "discovered" all of the great state parks in Georgia which rekindled my interest in that which isn't man-made.
So when I travel I look for places to walk - both in the city and in the country. Singapore is pretty small so it doesn't have that much country, but there are some places to get out and see the wild.
There is a new trail since my visit that heads east - actually, there is a new visitor's center on the eastern edge from which the new trail heads west to join with this original trail. If I get the chance, I'll definitely be checking out the new extension.