gives us an example of PF and why you like it more than IF
No problem here's an example.
Lets make some assumptions:
You've completed a 12 week program and you have a week or two for deload.
Having the ability to fast longer than 36 hours at least once or twice in the same year OR have been able to get into mild ketosis (40+ urine strip) fairly easily.
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During the deload you select 48 hours to abstain from any nutrients other than electrolytes. This is EXTREMELY important as anything above 5 cals can slow down the switch* from the glucose to ketones.
*If you do a 3-4 day keto diet the transition is much easier and you can see much better results.
As I'm sure most of us are aware insulin is negatively correlated with GH levels. A 36 hour fast (some say 24) can increase the natural increase in GH by 2000%. If you go longer it can continue to increase. What about protein breakdown? Protein loss occurs in early fast but decreases as ketogenesis increases.*
After 72 hours the gh level off and the body at this point I wouldn't recommend going any further. Unless you want to really push autophagy for a specific illness or an immune system reboot.
Some easy reading but there are plenty of studies that you can find by a Google search.
From weight loss to improved blood sugar control, fasting can affect your health in many impressive ways. Learn 8 health benefits of fasting — backed by science.
www.healthline.com
You can lift very lightly, and do walks. As long as you don't force the body to look for quick fuel and start breaking down muscle tissue and covert it to glucose. You can burn a ton of calories from fat stores, be free of food for a bit and have amazing mental clarity. A great side benefit is during the next diet you have greater ability to differentiate your body's hunger pangs from actual hunger.
For me the vegan keto route it's way harder than just being vegan. I just stick with PF when I need to address something very specific or during scheduled times in the year. I do IF to accommodate my busy days at this point.
I hope that answers your question, might have went in more than necessary.