Unfortunately, with our high-sugar, high-carb, constant-snacking culture, it’s been a long time since many of us have burned any logs of firewood. In fact, many of us currently rely almost entirely on kindling (glucose) to fuel us and, as a result, our cells have lost their ability to quickly and efficiently switch from using sugar to using fat for fuel. In other words, we’ve lost our metabolic flexibility and, therefore, our ability to maintain consistent energy levels, brainpower, and appetites.
