I weigh every morning after absolution, but I know I have a range.
My weight fluctuates in about a 3 pound range, when I am being lazy but not bad, and that range creeps up when I am being lazy
and bad.
Of course when I am being really really good, the scale is quite a ego boost when the numbers go down.... as they have been lately.
In short I don't stress, but I do keeps tabs.