The scale is an evil thing. Why I'm not using it right now. I am trying to focus on fitness and eating right. Scale be darned.
Though, I've been at this a LONG time, so I know what I'm doing better and have a better feel of what off plan and on plan is.
Just remember that the scale is just ONE tool and not a very good one.
I get bemused as I watch the scale do this.
Random numbers, but true pattern:
200, 200, 200, 200, 200, 200, 200, 200, 200, 201, 201.5, 201.5, 202, 203.5, 203.5, 203, 203, 203, 203, 202, 201, 200, 199, 198, 197, 196, 195, 195....
4 week cycle VERY typical for me AND it can be more extreme than that. That's if I lose 5 pounds for the month and not more. Truly, I'll lose a pound a day for like 10 days (first relosing the water weight gain and then the pounds for the month).
The scale shows it as not losing, gain, then man... I must be really working hard and starving myself. No... I've been consistent with exercise and eating for the entire 4 weeks. My body just has other things going on that don't allow those changes to show on the scale until it's ready.
Women have cycles, but it's not like men don't have hormones and processes too.
Two years ago my husband went on a fitness/weight loss thing too. He would stay the same for a month, and then in a week drop five pounds. Repeat for a month of stall, then 3 pounds in a week. So strange. He was going within a normal weight BMI to a lower weight BMI, so vanity pounds, essentially, but the body just doesn't give them up like you would think.