My longest fast was 5 days. My personal experience was that starting from day 3 I was a little "lethargic" or basically slow in the morning, but that feeling went away fairly soon, and by 10 AM I was operating as normal.
But things like climbing up the stairs got noticeably more difficult, even though I'm a physically active person. I would not dare walking 12 kilometers while fasting, except maybe shortly before breaking of the fast.
Anyway - no noticeable hunger, no nausea or vomiting and the bowel movements also stopped on day 1 or 2, so quite a fun experience overall.
My longest fast was 5 days. My personal experience was that starting from day 3 I was a little "lethargic" or basically slow in the morning, but that feeling went away fairly soon, and by 10 AM I was operating as normal.
But things like climbing up the stairs got noticeably more difficult, even though I'm a physically active person. I would not dare walking 12 kilometers while fasting, except maybe shortly before breaking of the fast.
Anyway - no noticeable hunger, no nausea or vomiting and the bowel movements also stopped on day 1 or 2, so quite a fun experience overall.