Weight / Fat loss

That's interesting. I'm keto adapted, and on this ride (before breakfast, no fuel during) the numbers match up amazingly well: 1.54g of fat per minute over 2H24 would be 1996 kcal, and strava says I burned 1989.

http://app.strava.com/activities/313422443

Such a precise match must be coincidence though, I expect I used some stored carbs.