I wrote about the health benefits of using continuous glucose monitors (CGMs) more than ten years ago in The 4-Hour Body. At the time, CGMs were primitive and hard to use. Levels has now made this technology, and the unique insights that come from it, easy and available to everyone. Levels is making glucose monitoring simple, helping you see how food affects your health through real-time feedback. I started tracking my glucose years ago to learn more about what I should and shouldn’t be eating (including quantities, time of day, etc.), based on objective data from my own, unique physiology. Keeping my blood sugar stable is critical to my daily and long-term health and performance goals. Furthermore, poor glucose control is associated with a number of chronic conditions like diabetes, Alzheimer’s disease, heart disease, and obesity. It’s important.