If you only weigh them every, say, two weeks how would you know if their weight loss, or lack of, is actually dehydration or extra retained water?
The same can be said (and is likely to be more pronounced) for making daily measurements. The day to day natural variability in a person’s weight make ‘daily weigh ins’ for the purpose of clinical weight loss ‘not so useful’.
I’m also aware that the greater number of data points can make more accurate graphs, but for this purpose, it frequently proves to disappoint or over-exaggerate the actual effect (or lack of) of ones perceived diet.
Plus… I didn’t ask how having more data would iron it out – I asked how more frequent weighing would do!
DrP