Alright, I wasn't sure if this should be posted in the Software/Hardware issues forums, because I'm not 100% sure that is actually a glitch...

Ok, so I'm currently playing hardcoe mode and yesterday I was checking on my Dehydration, Starvation, and Sleep Deprivation when I noticed that the little bar on the Sleep Deprivation level was at zero and there was no number underneath it (not even zero, just no number). At first I thought that maybe I had used an item that I wasn't aware I had or that I had gained a Perk for something, but I wasn't able to find anything that looked like it would have been the cause.

So, has this happened to anyone else and is it a glitch, or something caused by an in-game action?

So this hasn't happened to anyone else I guess...?

That hasn't happened to me so it may be a bug.

happened to me after using an atomic cocktail. All I did was turn off hardcoe mode, then turned it back on. Should fix it.

Did you use an atomic cocktail? (or other sleep affecting drug?)

Several (probably all) of these meters can drop to negative numbers. It may be that yours is below zero, but ticking it's way upward.

If you ever turn hardcoe mode off, even for a second, you won't get the achievement

It happened to me too, after drinking an atomic cocktail

Yeah this happened to me too, but only after I hit and passed level 30 (currently level 34). It actually seems that not only is sleep no longer necessary, but water requirements have increased. Perhaps its actually trying to simulate how old I'm getting.