Training fasted: just about weight loss? Preparing for a 100mile ride in August I was thinking of following a training plan which came in a "Sportive Guide" given away with Cycling Plus magazine this month.

Some of the days on the plan mention training for an hour before breakfast in order to burn fat.

Is this just about losing weight? (If so, I'm pretty sure I don't need to since I'm 6ft tall and weigh about 67kg) Or is there some reason that training before breakfast is somehow better?
Advice in book Racing Weight by Matt Fitzgerald goes something like this, paraphrased:

Yes, training without carbohydrates will train your body to use stored fat better. But your capacity to train will go down (not enough fuel!), and net result will be less improvement.

It references this study, which compares two groups of athletes on hi-carb and low-carb diet during a hard training block. 

One of the general themes of the book is, you want to improve your performance and body composition, not your weight per se.