Go to Bukit Timah Nature Reserve for mountain biking or walk around and smell the green. Bring a bottle of water and shades and be careful of monkeys. Enjoy the fresh air and maybe for once in your life think about the environment. Get ready to do a lot of walking … If you are panting after 100 metres up the slope, you need to seriously consider giving up fast food and mahjong. Bukit Timah means hill full of tin. Which explains if you are able to own a house along Bukit Timah road, you have to be quite wealthy.