These days, fatigue is so common it has spawned a subset of conditions: chronic fatigue, crisis fatigue, vital exhaustion, and even Zoom fatigue, to name just a few. Whether the tiredness is a post-COVID symptom or just depletion from the day-to-day rigors of life, most of us could use a sustainable energy boost. In his new book, The Energy Paradox, Steven R. Gundry, M.D., a cardiothoracic surgeon and New York Times bestselling author, explains that the root cause of your personal energy crisis likely has to do with how…