I do a slightly different form of intermittent fasting where everyday I only have Bulletproof coffee (just fats) from 10 PM to 4:00 PM. You write ” I am still able to do moderately strenuous physical activity on fasting days ” While I’m not an expert, ideally you should not be weaker while fasting because your body is gaining energy from ketosis.
While I’m far from an expert, I think if you go from breakfast until midnight without eating anything you will go into ketosis if you are keto-adapted, and if you are not, you will be in extreme discomfort.
That actually depends. In my case (n = 1) if I stop eating while NOT being keto-adapted, after some period of time I will feel physically weak and mentally slow for a while. That’s my blood sugar crashing, but subjectively it just feels as being weak and slow, not “extreme discomfort” at all. I don’t normally get serious pangs of hunger.
I don’t think I’m typical in this respect, but I would be surprised to learn that I’m only one in a thousand or so.
To clarify: although my wording made it sound like I was slightly weaker while fasting, I haven’t noticed a difference in strength, which is what I wanted that quote to illustrate. Incidentally, I just realised that a better example of that is that I have started weightlifting recently, and have not noticed a difference between fasting and non-fasting days.
I do a slightly different form of intermittent fasting where everyday I only have Bulletproof coffee (just fats) from 10 PM to 4:00 PM. You write ” I am still able to do moderately strenuous physical activity on fasting days ” While I’m not an expert, ideally you should not be weaker while fasting because your body is gaining energy from ketosis.
Why would he be in ketosis? If he isn’t eating low carb on his non-fasting days he should have an ample supply of glycogen, right?
While I’m far from an expert, I think if you go from breakfast until midnight without eating anything you will go into ketosis if you are keto-adapted, and if you are not, you will be in extreme discomfort.
That actually depends. In my case (n = 1) if I stop eating while NOT being keto-adapted, after some period of time I will feel physically weak and mentally slow for a while. That’s my blood sugar crashing, but subjectively it just feels as being weak and slow, not “extreme discomfort” at all. I don’t normally get serious pangs of hunger.
I don’t think I’m typical in this respect, but I would be surprised to learn that I’m only one in a thousand or so.
To clarify: although my wording made it sound like I was slightly weaker while fasting, I haven’t noticed a difference in strength, which is what I wanted that quote to illustrate. Incidentally, I just realised that a better example of that is that I have started weightlifting recently, and have not noticed a difference between fasting and non-fasting days.