I guess it's a case of each to his or her own. I find weighing daily does help, since it has allowed me to see the pattern. Whenever I'm going up and down, I now know that ultimately I will see a whoosh...so I don't sweat the ups and downs. If I didn't weigh daily, I would never have discovered the pattern. Depending on where in the "up and down" cycle I was, I would just see a loss one week, a gain another week, no change the next week, etc., and I would wonder what the heck was going on!