I’m confused about how the body can continue producing urine after you’ve gone many hours without eating, drinking, or peeing, and you’ve already had your morning pee. For example, I’ll get to bed around 11 pm and wake around 5 or 6 am needing to go to the bathroom. I’ll pee a lot since I haven’t gone all night and then get back to bed. But I very often wake again in an hour or so having to pee just as badly as I did before. How is this possible if I haven’t consumed anything new and my body had all night to process waste that was then expelled with the first morning pee?