Until recently, the only way to test your glucose was by pricking your finger every day. Now you can monitor it using a continuous glucose monitor, which you wear on your arm. Continuous glucose monitors connect to an app on your smartphone or Apple Watch, letting you easily check your blood sugar throughout the day. Editor's note, June 25, 2024: Since this article was first published, Dexcom has launched the G7. This sensor is smaller than the G6 and has an improved alert system, along with a few other differences. Stelo was the first over-the-counter CGM available in the US when it received FDA approval in 2024. The small sensor sits on the back of your arm and tracks your glucose levels 24/7. You can view your glucose levels within the app, and if you have an Oura ring, it pairs seamlessly. Levels are also viewable within the Oura app. Each sensor lasts up to 15 days, it's pretty low maintenance, and it's an easy way to see how your stress, meals and daily habits influence your glucose levels.…