Hello everyone! Lately, I've been working on my own setting, using the Pathfinder ruleset and the other night, me and my friend stayed up working on it; and it had occurred to me, there didn't seem to be any rules for lack of sleep, no matter where I looked. There were rules for forced marching and the like, but I don't think those translated over well at all (Healing subdual damage should NOT make someone not tired anymore, for example).
So I've been scanning around a few forums, and got a general consensus, I think. Generally, everyone seems to note that no matter how healthy a person, they'll still go through sleep withdrawal and deprivation. The example given was that even army recruits go through it, despite being generally in good health. It has also been noted that people seem to go through mental fatigue quicker than any physical fatigue (Or at least get it worse).
I have also noticed a pattern in peoples thoughts on how the rules should be regarding sleep deprivation. Many think that there should be a constitution check with an increasing DC starting at around 10, or the like, or a constant wisdom, intelligence and/or charisma penalty. This is usually followed somewhere with a fatigue and/or exhaust effect built in as well.
In the end, I was contemplating doing it something along the lines of.... per 4 hours of missed sleep (Not sure when that would be gauged), the character attains a -2 penalty to Wisdom and Intelligence. Once these penalties become -4, the character becomes fatigued. Once the penalties become -6, the character also becomes exhausted. If either wisdom or intelligence become 0 due to sleep penalties, the character passes out due to physical and mental fatigue. The character can not wake up until they rest enough to bring the penalties down to at least -2. The penalties are removed at a rate of 2 per every 4 consecutive hours of rest after 4. (For example, 8 hours of rest will remove a -2 penalty caused from 4 hours of missed sleep).
Though this brings up questions as to when I would gauge the 4 hours missed, or whatnot (Perhaps if a character has 20 or more hours of being awake without sleep?), or if restoration removes the penalties.
I know, huge post, but what is everyone else's thoughts on the matter? I basically wanted to make a system so I can actually involve sleep importance, but without causing too much trouble or strain for me or the players, in the sense of too many rules and number crunching. Thank you all for your time and attention!