I have zero symptoms, none whatsoever. My HbA1c has been in the pre-diabetic range for 7 years. I sleep great, I have little or no stress in my life, I eat very few UPFs, almost no cakes, pastries, biscuits, chocolate, crisps, pizza or any type of junk food. I exercise a lot (walking, swimming, rowing, resistance and Pilates) and have body fat of around 15%, visceral fat <90 cm2, high ALMI (Appendicular Lean Mass Index - muscular limbs) muscle are great glucose sinks. I've used a finger prick test for many months and my spikes are within the normal range and return to base levels quickly. My GP has told me that there is evidence that some for some people insulin sensitivity is a function of age, there's also genetics.