The RNG involved is so huge that you’d need to repeat this test more than 10 times to get meaningful results.
You almost certainly just got luckier on the test with herbal tea.[/quote]
I played many broken cyborgs (that was what I played almost exclusively, for several months). I had a pretty good feel for how long until the healing stopped… and when I switched to herbal tea instead of water once I got out, that time increased a small but noticeable amount (a few days, I think it was). It was not a single test.
I did also make some attempts at other healthy food, but that would have been smaller than all the tea. Also, I sometimes used better teas (but those can all go bad, IIRC).
Eventually, I did still get to the “no healing during sleep” territory, but a) it took longer, on average, and b) recovery once leaky bionic was removed was a little faster (on average).