How can I gain 3 pounds seemingly overnight?

"Yup, gained three pounds since yesterday. I'm back where I started over a week ago. I guess this TDEE-20% stuff just doesn't work."

WRONG!!!

Yup, 3 pounds in less than 48 hours. That might cause some of you to panic or quit or something but as an old timer at this weight control thing, I just analyze.

Exactly how much soy sauce was in and on that take-out Chinese I had last night? We'll never know. But it was tasty and within calories but not, by a long shot, within sodium. I'm sloshing around like a filled kiddie tub this morning. These three pounds will miraculously disappear in a few days as I go back to homemade foods where I control the sodium hit.

So, since this is a non-issue, why am I bringing it up here? Well, in hopes that a newbie will read it and realize that weight variations are COMPLETELY normal.

(Oh, and my ticker doesn't reflect those three pounds because I only record weight on Sundays.)