[TimSchumann]

I lost zero noticeable lean muscle mass on my 60 day fast, at least no more than I would have sitting on the couch doing nothing.

There's just not a metabolic pathway for breaking down muscle/organ tissue for energy when you have adequate fat stores. We would have died off as a species a long time ago if that were the case.

In the grand scheme of things, if you have the body fat, 7 days is nothing for a fast.

Edit: To those asking, yes. I fasted for 60 days, water and electrolytes, no calories.

[CamelRocketFish]

When you say 60 day fast, are you saying you didn’t eat for 60 days and just drank water?

[brodouevencode]

https://news.ycombinator.com/item?id=27619297

I remember his post from a few months back - found it rather inspiring.

[CamelRocketFish]

Thanks a lot for linking that @brodouevencode

[pid-1]

Did you exercise or work during this period?

[TimSchumann]

Once-ish a week there was Light lifting, think moving a whole trees worth of firewood or a light day on a family farm.

Quite frequently I hit over 10k steps/day on my step tracker, sometimes double that. I live in the middle of a major city and walk everywhere, and this was before work from home.

If you’re looking for exercise/fasting advice check out my fat per unit time post elsewhere in this thread.