As I kicked back the kickstand, I discovered a flat tire on my bicycle. Ugh! So, I walked the bike to a nearby bicycle shop (one that I pass by nearly everyday). The kind man there found and patched two punctures in the tube all within about an hour and charged me only 10,000 wons. After that, I returned home and enjoy another rest day before going to work.
I guess I can make it up on Saturday.