I've been playing survival mode and it frustrates me to no end that I can't keep an eye on how thirsty, hungry, or tired I am. There is no way to know just how bad off my needs are until I am so deficient in one of those areas that I start taking penalties.
There's nothing like running a long way with intent to clear out a point of interest for a quest only to arrive and suddenly get drowsy because I haven't slept in a real bed for an arbitrary number of hours (and then there's no way to fix the problem because the only thing available nearby is a dirty mattress on the floor).
So, I wonder: Will drinking before you get parched, eating before you get peckish, and sleeping before you get tired stave off the negative effects before they can occur? Will performing these actions reset the timer in the game code that counts down until the negative effects happen, or will performing these actions before they are "necessary" just waste the effort?