My daughter asked last fall, "Want to do a triathlon?" Actually, she texted me. I replied, "sure", and then forgot about it. A month later I got around to signing up for the Danskin triathlon and then forgot about it.
Several years ago I thought of marking a birthday by doing a triathlon. I read a book from the library and forgot about it.
A few months ago I bought a triathlon book. It makes a nice layer on the bedside table. Yesterday I got another tri book from the library with a 12-week training timeline. I counted the weeks until the Danskin triathlon: 11 weeks, 3 days. Today I went out and did part of Day 1. Run 1 minute, walk 1 minute x 5