Case 3: CGM report – Exercise-induced hypoglycemia

Continuous glucose monitor (CGM) tracing showing hypoglycemia in the morning and evening associated with exercise (arrows). The person overcorrected the 6 AM hypoglycemia (with breakfast) and developed hyperglycemia at 8 AM. The low at 9 AM is likely due to the insulin taken at 8 AM when their glucose level was rising (after eating to correct the hypoglycemia) as well as due to the post-exercise hypoglycemic effect. The low at 9 PM is from inadequate intake for the dinnertime insulin, as well as the prolonged effect of the evening exercise.