BG Spikes following exercise (Type 2)

I have the spike with weight lifting, with brisk walking my BG is going down. 12.6 is high, but it takes some time on LCHF to clean up the body - the BG will go down. The period was 14 days in my case to bring BG under 5.7 before meal. Be patient, keep LC and excercise.

I had the same problem, and my blood glucose test results after exercise remained high for weeks. It worried me too, but I persisted because I am TOFI (Thin Outside, Fat Inside) and building muscle is one of the best ways of normalising TOFI blood glucose. In his book "Fighting insulin resistance with strength training" Dr William Shang recommends exercising muscles to exhaustion. That sort of stress will raise blood glucose, but the body adapts. The strange thing is, in my case the BG result didn't gradually reduce, but sudenly fell to normal.

Mick1959 said:

The 12.6 spike alarmed me a little, as I was not expecting that.

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Your metabolismus is in inconsistent state now. Do not do much conclusions right now. Wait till the number before dinner will be under 5.7. (My pancreas is sleeping whole forenoon - works as expected only afternoon )

Metabolism_Boss said:

The strange thing is, in my case the BG result didn't gradually reduce, but sudenly fell to normal.

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Yea, the body and liver was cleaned - for me 14 days, after that quick fall to normal numbers.

Mick1959 said:

ease up on pushing myself during exercise when on bike to stop sugar dump from muscles

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Exercise can raise you blood sugars which is logical when you think about it you need more energy so your liver dumps sugar into your system to be taken up by the muscles. By breaking down fat which is what your after.

Looking at your numbers its important to see that there going down.
The more you do this the less Insulin Resistant IR your muscles will become and these numbers will spike less and lower at a quicker pace. This is why many people find that exercise lowers bg levels after they have been doing it regularly there body's become more efficient/ effective at doing this.

Initial spike of 12.6 I would assume is a combination of intake of food and exercise combined.
There is an argument for eating a high protein meal after instead of before as the protein takes longer to convert into fuel (less of a bg spike) and that fuel should be sent to the mussel to repair micro damage caused by exercise.

An importation thing to remember is muscles continue to burn fuel up to 24 hours after you finish exercising. Which is why the numbers are going down.

Mick1959 said:

This new world of rise and falls in my BG is like the stock market - always up and down

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With some training this “market” is very stable: For me 3x a day going over 5.6., but not over 7.7. Bore

Glad I found this section I have same problem. I am classed as Type 2 for last 2 years but i am quite active and play sports. I have seen my BG always going up after exercise. Will wait for more days on LC to see if it stabilises.

As I understand it your body fat releases stored sugar to provide energy for the work (exercise) your body us doing. When you stop exercising and then immediately test your blood sugar you will get an artificially high trading because of this. I would suggest wsiting an hour or two before testing after exercise

After persevering with gym, today I noticed that my BS only rose by .2 mmol/l after some weights in gym. Admittedly it was not very heavy session but still I was sweating. 5.9 fasting to 6.1 after gym.