As I was finishing my run today, I noticed that I felt a lot less grumpy and worn out and "whew I'll be glad when this is over" than I often do, which I attribute to finishing my mileage on a gentle decline, rather than at the top of a hill. Then I remembered Kahnemann's colonoscopy study and realized I might be able to harness the peak-end rule to lessen my aversion to running!

This is the first time (that I remember) that I feel like I've gotten my hands on a cheat code and known how to use it. Still trying to decide whether to start by trying to optimize every aversive task or cackling maniacally!