I am not impressed. The creation of glucose by the liver, gluconeogenesis, is strongly controlled by epinephrine (adrenaline), the same hormone that cranks up

I am not impressed. The creation of glucose by the liver, gluconeogenesis, is strongly controlled by epinephrine (adrenaline), the same hormone that cranks up the heart rate. Thus it is not surprising to find heart rate variability changes simultaneously with glucose changes.