I had a right shoulder pain that never left in months? Tips?
If you are fasting for some kind of healing and have the bodyfat to spare, shoot for a week.
Based on what I’ve heard on various bro-science podcasts, roughly 5 days into a fast is when the potential for post-fast regenerative processes increase dramatically. That’s why Valter Longos “fasting mimicking diet” has you re-feed at 5 days for example. And past a week it’s diminishing returns. So theres no harm in going longer but theres also less benefit.
Many of the healing benefits of fasting takes place after the fast, thats when stem cell based regeneration happens for example. Since your post-fast refeeding plan is arguably as important as the fast itself, read up on that should you embark on the journey.