Hi there! I'm not a runner, but I came across your information and wanted to offer you something.
I used to have leg cramps when I was a kid as well. They went away and everything was everything. Then I went keto in the cramps came back with a vengeance one month later. Although I am no longer on the keto diet and had to switch to the same guy that you are on, the resources available for people on the keto diet are insurmountable.
They know the problems that you're going to have before you have them and what you can do to solve them. I found that my leg cramps were caused by a magnesium deficiency. We always think it's either sodium or potassium, but we rarely think about magnesium which completes the top three electrolytes that we need the most.
So anyway, they advised to get this magnesium called slow mag. Walmart has it. You can also get it on Amazon, but none of the health food stores carry it. The reason why you want to lean towards this is because magnesium is a laxative and because of this, any other magnesium will poop out so fast that the body doesn't get a chance to absorb it.
Also, I was getting bad night cramps; Three a night and it took me forever to walk them out. I started taking the slow mag and although it takes a couple of weeks to kick in fully, after a few days, you start to feel your legs doing better. Now, I'm getting the ones in the morning when I stretch as well. However, they come right out very, very easily.
The keto books taught me that when you drastically cut your calories like that, you are also drastically cutting your electrolytes and whatnot, but when it comes to magnesium, I think the research says like 75% of Americans aren't getting enough because of the process foods and things that strip all that away. The doctors of the books I read claims that more than likely, you will already deficient in this mineral, but because you were eating so much more, your body was able to mask it. Now, I eat about a thousand calories a day so I'm eating only with my body needs right? If I'm not getting the amount of magnesium I'm supposed to be getting it, it's going to show now that I'm in my forties.
Also, I read that most Americans get 170-220mcg of magnesium a day and it should be damn near twice that much. In case you're wondering of overdosing, I checked that too. You would have to eat well over 5000 micrograms of magnesium to do that. This is about one-tenth of that amount.
I've just come to realize that now we are in the day and age of supplements that we cannot afford not to take. When I looked at the keto forums and it talked about people with these issues, all of them gave me everything I needed. My doctors wouldn't help me and the keto forums told me that they wouldn't. They're going to tell you everything is fine and send you home and that's exactly what my doctors told me. I was dying every night and they would not help me. The keto forums also taught me that if you skip one day of magnesium, you're going to pay for it. I paid for it dearly.
Because you are probably deficient, the doctors of the book say to take 3 slow mags a day for 20 days and then stop. If the cramps come back, take three a day for 20 days again and then take two. That should help, but it doesn't help for me. I suppose because I eat so few calories, I have to stay on three a day. Once, I even took one of my three slow mags a couple of hours late and I caught a cramp that night. It's exactly how the people in the keto Forum talked about. You will definitely feel a difference if you start taking them things for a couple of weeks and then just up and stop. That's how you know it's a magnesium deficiency. I hope this helps you and I'm sorry it's so long.