Mccoy I’m not sure 🤔 what you mean here when you say “ I avoided all sugars but the fasting values kept high”. Can you explain? What fasting values? Do you mean you can run 🏃♀️ fast with sugar ingestion? ( I think that would be helpful for my jogging routine ) Also, wonder if ‘spiking glucose levels’ is bad for everyone? Do you have preexisting health challenges that would make bringing up sugar levels deleterious for ‘YOU’? Or perhaps 🤔 you mean that sweets will over take the best of us healthy specimens. Those who are slowly deteriorating as sweet tooth’s, attempting to still jog a half an hour a day. We are finding our pace slowing to a cain supported walk without any energy, because all sorts of sweets have been eliminated from our diets?
Sorry for not being clear. I meant the blood glucose (or glycaemic) values when fasting, a measurement usually taken in the morning before eating. This is a measure which suggests if you are in the good side (non-diabetic), in the bad side (diabetic), or drifting toward the bad side (prediabetic). A couple of years ago, my measurements (taken at home with a glucose meter and strips on a drop of my blood) started drifting toward the prediabetic camp, so I had no choice but to intervene.
Spikes in blood glucose can be, on the long run, deleterious to health, so another condition which would make you a diabetic is to have a blood glucose value higher than a determined threshold after 2 hours from the ingestion of a determined quantity of glucose and water. There is on top of that Glycated hemoglobin, also known as HbA1c, which is the average quantity of blood glucose in about the 3 months before the measurement, and it shouldn't be above a determined threshold.
As to sugars and running, if you drink something very sugary before running (like, fruit juice), the muscular exertion will prevent an excessive spike in blood sugar, in function of course of the amount of sugar ingested and the degree and duration of the run (or whatsoever other exercise).