But this thing, whatever it was, this mistlike something, hung there inside my body like a certain kind of potential. I wanted to give it a name, but the word refused to come to mind. I’m terrible at finding the right words for things. I’m sure Tolstoy would have been able to come up with exactly the right word.

Anyhow, I put my swimsuit in my bag and, as always, drove my Civic to the athletic club. There were only two other people in the pool—a young man and a middle-aged woman—and I didn’t know either of them. A bored-looking lifeguard was on duty.

I changed into my bathing suit, put on my goggles, and swam my usual thirty minutes. But thirty minutes wasn’t enough. I swam another fifteen minutes, ending with a crawl at maximum speed for two full lengths. I was out of breath, but I still felt nothing but energy welling up inside my body. The others were staring at me when I left the pool.

It was still a little before three o’clock, so I drove to the bank and finished my business there. I considered doing some shopping at the supermarket, but I decided instead to head straight for home. There, I picked up Anna Karenina where I had left off, eating what was left of the chocolate. When my son came home at four o’clock, I gave him a glass of juice and some fruit gelatin that I had made. Then I started on dinner. I defrosted some meat from the freezer and cut up some vegetables in preparation for stir-frying. I made miso soup and cooked the rice. All of these tasks I took care of with tremendous mechanical efficiency.

I went back to Anna Karenina.

I was not tired.

AT TEN O’CLOCK, I got into my bed, pretending that I would be sleeping there near my husband. He fell asleep right away, practically the moment the light went out, as if there were some cord connecting the lamp with his brain.

Amazing. People like that are rare. There are far more people who have trouble falling asleep. My father was one of those. He’d always complain about how shallow his sleep was. Not only did he find it hard to get to sleep, but the slightest sound or movement would wake him up for the rest of the night.