And I would add that when Maffetone uses the words "fat-burning zone" he doesn't necessarily mean it the same way that CW tends to make it sound, like some magic zone of weight loss. It's not so much "this is the range where you will lose the most weight" as "this is the range that supports the metabolic pathways that use body fat for limitless energy rather than the ones that use liver and muscle glycogen, which are more limited."
Since low carb and ketosis are means to turn on and support the metabolic pathways that use body fat for energy rather than liver and muscle glycogen, I am using the Maffetone method to further support that effort.
Maffetone also discusses carbohydrates a lot. He sees a lot of people who are carbohydrate intolerant. Every person needs to find the level of carbohydrates that are okay for them. For some people it may be very low. I believe it is rather low for me.
The Maffetone method gives me hope that I can be as physically active as I want to be, even make improvements and take on new activities that I've only ever failed at before, and at the same time, pursue a level of carb intake that is supportive to my best health AND my best performance.
It's such a subtle concept to try to express. I hope I've done so here.
Female, 5'3", 49, Starting weight: 163lbs. Current weight: 135 (more or less).
Starting squat: 45lbs. Current squat: 170 x 3. Current Deadlift: 220 x 3