Hi I have been eating a ketogenic diet for over 6 months more recently adding intermittent fasting. During the last 6 weeks I have done two 4-5 days fasts and while I feel great while fasting I feel really tired for several days after breaking a fast. After the fast my blood sugars are similar to during the fast (about 3.9 - 5.5 / l 70 - 100 mg/dl) and ketones measured on a ketonix usually about 10-11 which is my normal results. I have insulin resistance but not quite in the diabetic range and I am otherwise healthy. I have looked through the forum and can’t find anything on this and do not know if it is expected.
Tired post fasting
Molten
#2
I have the same issue. Feel great when fasted, and lethargic for some time after a IF/extended fast. Not sure what is causing it. When i eat a small meal after fasting it’s not too bad. But if i eat a good sized meal i basically stay in the couch the rest of the day.
Not much help, but at least you are not alone in experiencing this 