Fat adaptation is extremely useful for long alpine days but seems to have less benefits for general training and fitness. Say I have 24 weeks to train for a single-push style alpine objective. Would it be prudent to spend the first 18 weeks or so doing my workouts fueled with carbs before the workout? Taking in glycogen before my activity should in theory give me better performance during the session as opposed to doing it fasted. Additionally, I wouldn’t be as concerned with catabolisis at higher intensities. During the last few weeks leading up to my objective I could switch to fasted work and hopefully be somewhat adapted for the climb. My thoughts are that the increased performance during the first 18 weeks would provide more of a benefit for my fitness than if I were training mostly fasted throughout the 24 week period. This is assuming I doing less than 15 hours a week of aerobic work. For me, training fasted also limits my strength and climbing sessions as I have to do my workouts in the AM. What are your thoughts on this?