I took a nap about an hour and a half ago, and I've been

>>17751767
how do you know its not water? most people even those who think they drink enough water are dehydrated. you probably operate under the assumption you only need 1l of water but that is just a myth, with no medical backing. between 1-2 liters is more realistic for an adult, and thats provided you don't sweat alot. also hydration isn't restored instantly, it can take upto two months for your cells to return to their fully hydrated state. adequate hydration can improve ones health a great deal.
i suggest doing some reading on how much water you should drink.
in saying that all, i don't know how your feeling, so it could be anything

A demon whisked your soul away

check your body for any new stitches/scars that you don't remember getting. you may be missing a kidney

>>17751784
Because I already drank several glasses of water after I woke up and it's not helping.

>>17751767

this is normal after napping. your body isn't used to such tiny spurts of sleep and the fact that you needed to take a nap is probably a sign that your body is a little more tired anyways.

you probably woke up during your REM cycle.