Just started. Well I have done a week.
Did it before some years ago and managed about 10 days, but then had the most extreme pain in my shins where I could not really walk and almost had to crawl back the last few 100m to my house.
Still am a lot lighter now and even did my fasts local “thereandback” 5km yesterday. Wondering how long I can do it.
Certainly too old to beat Ron Hill now…