I water fasted for over 100 days in 2024 between Feb-Sept., multiple-day fasts, several 7-day fasts, a lot of 5-day fasts and a 10-day fast. I enjoyed the fasting and my blood work improved a lot, historically over the last 10 years or so I had eaten keto and alwayed tried to go into hunting season in ketosis.
During the water fasts I still did all of my normal stuff, I even backpacked 7 miles deep in the eagle caps with my wife hauling camp on my back on days 3 and 4 of a fast, I did pack some salt and a bag on nuts and jerky incase I needed it but felt great. I love hiking and hunting while in ketosis because I can go all day without bonking out, I've went on a ton of multi-day backpack hunts with just a small bag of pepperoni, almonds and some cheese. My buddies think I'm crazy when they are plowing through mountain houses and PBJ's but I'm not even hungry. I plan on starting every archery season on zero carbs and becoming fat adapted, it makes it so even if you're eating a more normal high carb diet during the season your body will switch to burning fat without getting hypoglycemic.
I didn't see much weightloss with the fasting, I dropped a lot of water weight during the fasts but it always came back, even though I was eating keto between fasts. My A1C dropped which I wasn't worried about and inflamation was low. I fasted quite a bit prior to '24 off and on but really wanted to see if I could do 100 days. Completing 5-10 day water fasts definitely takes some mental fortitude, and I think everyone should do it at least once.