True, as the OP does not mention it. I have BPH, and sometime can get up for one 3 times in the night, only 2 hours apart, even though I have not drunk any further liquid. I sometimes wonder where it all comes from. But, of course, urine is also a by-product of what you have eaten, digested and extracted the goodness out of it, and then you get rid of the poison and suchlike. Pooh on the other hand is what your body cannot digest or need.