As a low-stress individual, I find sleep easy to come by. I lie down and let go of the steering wheel, and I fall asleep within 10 minutes or so. At one time a few years ago I went through a great deal of exercise and began drinking water, and so my body required less sleep (about an hour less on average).
My job puts me on the road 4 days out of the week: 4 days of waking up early (typically 6:30), standing in place and talking animatedly to large crowds for 11 hours, some errands, and going to bed late (typically 12:00). This has forced my body to adjust to less time asleep: whereas before this job I would "sleep in" for 10-12 hours, I still only need 8.
What I'm curious about is that in the past month, I've found myself reliably getting up to use the bathroom, something which I've never done for 6 years. I'd always either hold it in until morning, or if I was in a diaper, I'd let it out unconsciously. Whatever the case, it's too uncomfortable to go back to bed unless I use the bathroom. My question is why this habit has formed, seemingly out of nowhere. There are several possible explanations.
(A) It's possible that my bladder has shrunk due to me being partially dehydrated during the day.
(B) Forcing my body to adapt to a low-sleep schedule caused my metabolism to speed up to compensate, and so healing occurs quicker and more urine is produced.
(C) In maximizing sleep efficiency, my body decided that removing the discomfort of a full bladder is now necessary, and I can't just "tank" through the night.
(D) Underlying medical/psychological/emotional problems that warrant a trip to the doctor. (joke)
Maybe I have it all figured out already, but what are your thoughts on the issue? It's not entirely important, but anytime something unusual happens with my body I like to figure out the why and the how.