Well, taking a regular break to sharpen your axe, every half hour or after every tree, then you only spend a minute to save five minutes.[1] This is like running tests, or asking questions about what you have done recently to maintain focus on the bigger picture. Or to prevent a commit from getting too big. Or refactoring.

And sharpening a dull axe can take an hour to half a day. [2]

1. http://rockymountainbushcraft.blogspot.com/2012/08/how-sharp... 2. https://www.fhwa.dot.gov/environment/recreational_trails/pub...