I see that variation but I don’t generally try to prebolus it. It’s so fast that it’s not possible to inject enough insulin to cover it. My endo said, “1-2 units is ok.” However we’ve discussed it before and I’ve said in the past that it doesn’t seem to matter much; my results are specific to me.
Flipping through tidepool I see I peak rapidly at 170mg/dL then head up slowly to maybe 240mg/dL. That’s probably because AAPS kicks in and delivers insulin but it takes a while to catch up.
I suspect it is just different, based on the idea that bicycling and walking use different muscles to different extents. All our muscles have glycogen reserves inside the muscle cells, if they get depleted they need to be filled up. My hypothesis is that this massively changes the insulin sensitivity of the individual muscle so if we hit one we haven’t used recently we face going low in the near future.
Welcome to the real world , after YEARS of up and down. For last 9 month I have be able ti keep my level below 150 with only one or two lows caused by sensor errors. This being said, with NO change in diet I moved in to the 200 range.
Just be careful if you want to take a booster injection. It can cause your glucose level to plummet.
I have had T1 since 1958 and I am still mystified about why my readings vary so much even though I am doing the same thing I did yesterday.
I’m sure you must know that both diet and exercise level are both significant in T1, not just diet. If you want better control, use the methods of treatment that offer better control. If you are not in a program of regular education, you can seek one out where you live. Best wishes!
This is so relatable. It can be really hard explaining how the same routine can give completely different results from one day to the next. Those stubborn highs are exhausting. Hoping today treats you a little better.
coming late to the discussion, but yes, this happens to me regularly - and the more tired i am when I get up, the higher my blood sugars will go from a nice fasting level of 85 to 90. I have discovered that once I get up, once my blood glucose starts going up and reaches over 110 I bolus with either .5 Humalog - or 1 unit Lyumjiev if it is rising quickly. That seems to stop the rise going above 130. If it does go higher then I take another .5 Humalog bolus. This seems to keep me from spiking up into the 160s to 180s unless I am under stress and then I am dealing with cortisol issues and it is a different ball game. I am on MDI and use the Humalog Junior Kwick pen. I just found out that Lyumjiev has a Junior Kwickpen as well so am requesting that on my next visit. I am insulin sensitive and sometimes .5 units is all that I need. The lyumjiev works faster than the humalog but the humalog lasts longer so using the two together seems to be a workable solution for me (including Lantus for basal).
So, why not try bolusing once you see that rise starting and see if you can get on top of it.
If I remember I bolus 1IU with the first cup of tea (Lyumjev from an Omnipod). My body doesn’t seem to notice a spurious unit of insulin in the morning and, while it doesn’t seem to stop the rise, it probably helps. I really don’t notice the rise. At other times of day I might notice that much rise but not in the morning.
I’ve just recently learned the term “Costco Low”. I’m not a Costco shopper, but that explains what happens for a day of slow walking, sightseeing, wandering through flower gardens, …