A continuous glucose monitor (CGM), also known as a blood sugar sensor, is a device that you wear around the clock to monitor your glucose levels. Pretty cool, right?

Unlike finger pricks that people with diabetes have been using for decades, which give glucose measurements only a few times a day, your sensor takes new readings every few minutes.

This means your sensor gives you real-time feedback about your blood sugar responses to all the meals you eat during the day, instead of just a single snapshot.