Just curious, you returned to your previous BMI or gained muscle mass instead?
The biggest surprise to me was I was way more focused and attentive but I couldn't sleep much (sometimes 4 hours max). And at some point I got "keto rash" but it faded away eventually.
I think if you do the fast and then break the fast with stricker caloric diet and more protein you can gain lean muscle mass, but I got worried when I reached 58 kilos as people started pointing out how skinny I got..so I started bulking up again..
> but I got worried when I reached 58 kilos as people started pointing out how skinny I got..so I started bulking up again..
Its important not to swing too hard in other direction too.
At the beginning I was really worried, but as I said I was very alert despite lack of sleep/food and I was able to work etc.
My personal take from this experiment, was that we don't need that much food/sleep to thrive, but again that was my personal experience, and I wish there was more research on that instead of the constant mainstream message (sleep 8 hours and eat 5 meals etc.)