It was September 2022.  Eliud Kipchoge set a new all-time world record for the marathon in Berlin.

“What many people do not know about one of the fastest marathoners in history is his habit of keeping a detailed diary,” Anne-Laure Le Cunff writes in Tiny Experiments: How to Live Freely in a Goal-Obsessed World.

“This diary is not just a log of his physical training,” Anne-Laure notes, “it also … continue reading