Another daily weigher here.
When I first started this journey
(this time!) I did a little self-experiment. I wanted to see HOW MY BODY reacted.
I weighed 1st thing in the morning - upon awakening - completely naked. Then I "went potty" and weighed again. Then I'd eat breakfast & weigh again. Then once more when I got home from work, and one final time after dinner.
I wanted to see the natural fluctuations my body made during the day. I did this several-times-a-day weigh in for nearly a month. I also counted calories, kept a food log, and exercised mildly. It helped me see just how much my "weight" did fluctuate during any given day. It could sometimes be as much as 4-5 lb and one or two occasions by just a few ounces.
I still weigh daily - still 1st thing in the morning, still naked (who cares what my clothes weigh?!?!?!?

) I notice anywhere from a 2-4 lb jump when I eat heavy sodium foods the day before, even when I keep perfectly within my caloric range. When I concentrate on fruits & veggies and some lean meat, I can see a -2 lb difference, seemingly overnight.
But knowing that it takes 3500 calories to make one pound, and knowing that I don't ever eat that much on any given day, I know that any gain is just water weight. Sometimes it can take a week to get it off, tho! - and water weight or fat weight, seeing the scale go up is not a happy moment - EVER! But knowing how MY BODY fluctuates on a regular basis & reacts to certain foods, it helps keep me in check, not panic when I
"don't lose anything!" and keep on "keep'n on". And overall, I know I am losing. And that's what the journey is all about.