For my own purposes I just wanted to gather some links on the use of the "talk test" and nasal breathing as methods of ensuring that exercise remains aerobic / predominantly burning fat. (A key source for these ideas is Phil Maffetone - check his articles here and particularly What it means to be aerobic , Want Speed Slow Down and Healthy Hiking ) { I need to add context here to avoid confusing you. I am writing a magazine article about pacing for hillwalking, where you have to go out and walk for 5-10 hours. You need to stay aerobic, burning predominantly fat or else the limited glycogen will be exhausted. I am recommending keeping to a moderate pace as dictated by the talk test or nasal breathing to stay in that aerobic zone. This is not about weight loss or fat loss or whatever. And there are also other approaches like training fasted which could be used although my piece is a bit more generalist. I also think that HIIT / tabata ...
.......interesting things about fitness, strength, diet and performance.