How often should you weigh in??

every 8 weeks.

I weigh in every week. But I have only been at this a month.

Not more frequently than weekly. And more likely, every two or three weeks.

And I always weigh myself first thing in the morning after falling out of bed and going to the loo. Your weight can fluctuate hugely day to day. And I think it doesn't help to be constantly checking your weight - progress isn't that quick so it can be disheartening especially if it creeps up a bit when you expect it to go down.

As the weeks have gone by, I've learnt to trust myself - I know when I'm doing well, and I know the weight is going down bit by bit, so I have lost the need to check regularly. Recently I don't bother except to make sure I haven't gained anything if I've been to a party or not been keeping track properly.

There was a comedy show in the UK, Men Behaving Badly, about two blokes sharing a flat, and one of them decides to lose weight. There's a hilarious scene where he's weighing himself, and desperately trying to lose weight (within a few minutes) jogging on the spot, even cutting his fingernails to try and lose a bit. I always remember that when I'm tempted to peek. My scales are tucked away in a cupboard, so I'm not tempted to step on them every time I pass, and it's a bit of a scary thrill each time I get them out and get on. Luckily the worst is I haven't lost anything, but when the indicator slips a lb or two to the left, what a feeling!

I step on every morning. I think it's more realistic than to weight myself once a week. If you're someone who will get all weepy if you don't see results every single day, or will freak if you see a small fluctuation from sodium, then it may be better to weight in every other week or so when you'll have bigger results. Good luck on your journey!

Every morning. Record on Fridays. Generally, I tend to let loose a little on the weekends, so sometimes I forget to log in (more like I'm camping and there is no connectivity) so there is always a spike between Friday and Monday, but it has been getting smaller, and I tend to lose anywhere from .5 to 1.2 lbs a week still.

Every day, first thing in the morning. I've been addicted to the scale for far too long, and as much as I preach the "it's not about the number on the scale" mentality to others, I can't seem to abide by my own rules. I went for a long time weighing in only once a month, but I started gaining and stopped being as vigilant with what I was eating and my workout routine. Now I use my daily weigh-ins as a tool to tell me what I need to do better that day, or what I need to maintain.

I weigh every morning and try to record every Friday morning. Measurements I update every 2-4 weeks.

It's up to whatever you can psychologically handle.

I do it daily. It's actually much easier on me psychologically to see daily fluctuations than to step on a scale once a week and see NOTHING and feel like I did a week's worth of work for NOTHING and I would get so, so, SO frustrated.

If I'm up a little from yesterday, I understand it's because I had a work out the night before. No biggie. The next day I'm down a little because it was a rest day the night before. It also helps me to understand how my body processes what I eat (carbs, sugar, sodium, etc.). And then when I step on the scale and I see a lower number than I've ever seen before - woohoo!

But to wait a whole week and have nothing happen (or see a GAIN!) used to break my spirit and I'd quit right away. To hell with that nonsense. :-)

I also log my weight on a chart every day so I can see the downward trend (I use the Libra app on my smart phone). My loss is slow, but steady.

Again, I say it's up to what you can handle in your head.

PS: Check measurements too. My actual weight loss has been slow, but my shape is changing and it's definitely visible.

Twice a day! Record every piece of data, not just the ones I like!
(Btw that's why my news feed makes it look like I'm a star....it congratulates me on losses but lets the gains slip by unremarked)

Always the same conditions.

I can vary 8 to 10 lbs from weigh in to weigh in. I am always partly dehydrated first thing in the morning and after exercise and it shows in both weight and bf%. On days when I've burned a lot of cals I'm more likely to endulge in naughty foods which means my sodium intake can go from very low to several grams, and no doubt that shows too. I also drink lots of water, and water is heavy, so even though I weigh under indentical conditions depending on how much of that water is still kicking around I can vary several lbs.

Those of you weighing less often may be having a psychologically healthy relationship with your scale and simply don't need to weigh in in order to trust your progress and that's great. But you ARE missing data and can only draw weight-based conclusions after a much longer period of time than I can. I'd NEVER consider varying my diet/fitness program without 20-30 data points to support doing so.

I am fully cognizant of the meaning of weight variations and am neither overly celebratory in the lows (although it's always fun to see a new low) and certainly not depressed about the highs. I recently went through about 3 wks of extreme yo yoing and only by graphing my daily weights and drawing a mental trendline was progress visable. That's why I weigh-in in the first place...to make sure progress is still happening when there are no obvious nsvs and to help ensure it's not lean mass being dropped.I am currently too lazy to do measurements and photos, which I feel bad about because that's the TRUE goal here. But the scale is convenient so I use it religiously.

A commonly traded phrase on this subject is that "there is no right answer" but that is not really true. If you weigh infrequently your data will almost certainly be biased by something. In order to eliminate those biases you need a statistically significant sample base. If you weigh in monthly, that may mean a year before you can draw weight-based conclusions. If you record only the lows, your ticker looks better, but now you are biasing the data yourself! This is not an opinion...this is math. Data is data. The only time you should take less samples is if you don't understand the math and can't deal with the data...then you are probably better off ignoring the scale altogether which is perfectly fine.

Note that the number on the scale is only one metric of your progress. If it wasn't so convenient we'd be better of with something else.

If you want the scale to show meaningful data you must weigh in often. I am not obsessed by any means, I just understand the concept of aliasing and the Nyquist limit for signal sampling. (Yeah I'm in engineering but we need love too!)

Once/week is plenty for me. Intraday I can be a over the place ... If I eat salty popcorn etc.. I'll gain 2-3 lbs water and take day or two to shed ... Don't fixate on weight ... I prefer Mirror & calipers