Words and miles

At the Atlantic, Nick Ripatrazone on why many writers run:

The steady accumulation of miles mirrors the accumulation of pages, and both forms of regimented exertion can yield a sense of completion and joy. Through running, writers deepen their ability to focus on a single, engrossing task and enter a new state of mind entirely—word after word, mile after mile.

One day I really am going to write a personal book about exercise....