KD help us all out as we seem to be having the same problem. Bless us with your diet wisdom?
LOL. Sorry I missed this.
I suppose it would be a miracle if you did weigh the same each day. Are you sure you ate the same volume of food (ie, the same weight), drank exactly the same amount of fluid, sweated or exhaled the same amount during the night?
Did your food have exactly the same amount of salt in them...what? None at all? Any day?
If fat is released from fat cells, they sometimes gets replaced with water, though I don't know whether it's ongoing, or the water says "hey buddies...fat cells getting empty...charge!!!!"
What about your scales? How accurate are they? Do they say exactly the same if you stand on them 3 times in a row?
Hormones? Bless those lubberly hormones....they are there to teach you not to rely on scales
There's many, many reasons why this can happen, so you just have to keep on trundling. Weigh yourself daily if you wish. The scales aren't your friend, but neither are they your enemy. But however often you weigh, only treat at the most once a week as something worth noting down.
Oh...BTW, the average naturally skinny person does actually eat about the same volume of food each day. Calories may vary a lot, but the weight of food they eat is about the same from day to day. Thought I'd just add that little tidbit