I don't so much have that problem with either of those, just food. I can forget to eat for most of a day. And then wonder why I'm feeling weak and shaky, because it's not like I don't know I'm hypoglycemic or anything. Or, hey, when my sleep schedule is really wonky and I sleep 19 hours, I go "But why am I feeling shaky?" when I wake up and forget that, hey, due to sleep it's been over a day since I last ate.

Water, though, I'm good at. Mostly because I live in Arizona and, seriously, I almost always have a glass of water and am drinking it. Like, intermittently, but: always, always have water. Because otherwise I just feel like ass. And I'd rather pee every fucking hour than have a constant headache and feel like a limp rag, you know?