Earlier quoted context omitted.
It wouldn't be much of a metabolism trick at all if it doesn't work in ketosis or fasting. If you can burn fat, it should still work.
> It wouldn't be much of a metabolism trick at all if it doesn't work in ketosis or fasting. If you can burn fat, it should still work. Body will always switch to burning mostly fat after a prolonged period of physical activity which studies suggest for moderate level of constant physical activity happens somewhere around 90 minute mark. There are no magic bullets.
How would you know this?