How to prevent low blood sugar when exercising

Type 1 diabetics can find their blood sugar lowers when they exercise.

During exercise, muscles are working harder and need more fuel (glucose) than when at rest. They therefore use more glucose.

To keep blood glucose levels within a normal range, you either need to eat more carbohydrate than usual or to inject less insulin before exercise.

Most type 1 diabetics find a small reduction in insulin can be helpful. You’ll need to discuss this with your GP or diabetes specialist before initiating any changes to your normal routine.

To prevent hypoglycaemia (low blood sugar), carry a carbohydrate-rich drink or snack such as a piece of fruit or a low-fat cereal bar with you whenever you exercise.