Please let me know.
3-5 days seems to be the sweet spot when it comes to autophagy, although there’s debate about whether or not that actually causes loose skin to tighten up. But it seems like the best time to use the strategy is during your weight loss journey and not at the end of it.
Personally, I’ve found that 36 hour “monk fasts” tend to work well for me and I’ve lost about 60 pounds so far.
This article may be useful to you: https://thehealthymd.com/fasting-autophagy-and-loose-skin/