Though my enthusiasm has waned over the past few years due to various factors, I’m a committed-enough cyclist to be worthy of the name, cyclepath. And cycle paths are where you’ll find me in the pre-dawn (or early dawn) hours of most weekdays. Every morning I rise at 4 (by which time it’s already light in Tokyo at this time of the year), pour myself into increasingly tighter lycra and get out on my bike. I get out before I start thinking. Once I start thinking, I will talk myself out of riding. I’m basically not an exerciser, and am…