I live in Tokyo, which reaches zero in the winter, and is very hot and humid in the summer. This year I managed to continue riding through the winter, which prevented me from putting on weight in the holiday season. There is plenty of cold weather riding gear on the market, and by layering up, and wearing gloves and shoe covers, I have no issue riding on sub-zero days.

Summer in Japan is a different issue, it is hot, and very humid. And while I can bundle up for riding in the winter, I can't ride naked in the summer. On the positive side, in the summer the sun rises at 4 am, so I can get in a lot of miles before the full heat of the day comes on.