[alexkiwi]

Gotta love the cognitive effects of measuring simple data. Even if fuel points are arbitrary, the behavior change is a welcome one.

[JamesLeonis]

The fact that the points are arbitrary I think prevents someone from finding ways to hack or optimize it. If it counted calories, then you would look online for the best ways to burn calories. If it measured heart bpm, then you would find ways to cheat that.

[anusinha]

Someone I know who lost a significant amount of weight told me that his best source of motivation was measuring his weight every day and plotting it.