The range of blood glucose levels you want to stay within, but the shape of your line within the zone is also key to achieving your goals.
The zone is depicted by the blue area on the graph in your app, and is the area in which your metabolism is functioning at its best.
The numbers on the side of the graph measure your blood glucose, from high to low. Don’t worry too much about the exact numbers – it is the shape of the line (keep it smooth!) and staying in the zone that are important.