It is interesting. I had some tests done the day before I got leg cramps. The tests showed normal potassium, magnesium, and sodium in blood. So, what caused the cramps then? Some say these aren’t great indicators of magnesium level (in particular) in the actual cells. I’ve gotten red blood cell magnesium tests done, though, and those also show a relatively high magnesium level.
The other issue is, if I have no leg cramps this time, but did last time, is it the extra amount of minerals/pickle juice I’ve been taking in? It could be or it could just be random. For instance, I was running outside with flat shoes one day per week and doing treadmill 2 days per week in those flat shoes before my last fast. This fast is coming off vacation, so I only did one day of treadmill in the last few weeks. Maybe that’s it?
Day 3 of fasting. I had a better sleep last night, higher blood pressure (107/67) this morning. Not that cold, though I did sleep under covers. My wife says I sleep very soundly, with no kicks or shakes, which I sometimes get when I’m not fasting. She knows, because I go to bed shortly after 9pm and she comes up and reads until midnight.
The other thing that happens is that I’ll get super tired at 9pm. I was falling asleep on the couch last night. And that’s not unusual when I fast.
The second day is for me by far the worst. I also went home and sat through dinner while everyone else ate steak, shrimp, etc. That was tough.
As for the FreeStyle Libre, here’s what it shows me for one month:
I have months of data just like this. This graph is from a European model, though I now have a US model. To convert to US units, just multiply by 18. when I fast, the whole curve comes down, but the shape does not change. That is, I still have higher blood sugar in the morning, which goes up until near noon, then goes down all day until night. If I eat, the whole curve goes up. That is, my blood sugars all day long are higher than when I fast, but the curve shape is the same.
Also, I rarely eat breakfast, so that doesn’t affect the curve. In other words, my blood sugar, which goes up until about noon, is not affected by breakfast, since I don’t eat it. Coffee does not affect it, either, based on my delaying coffee intake until later in the day and my blood sugar still going up.
Ketones will be the opposite of this: lower in the morning, higher at night.