I saw people weigh themselves during a workout at a gym.

Is there a reason to do that? (besides the obvious wanting to know how much water one have lost and be able to drink accordingly?).

Curiously, some do it multiple times.

  • Was this person in the middle of running or some other continuous activity?
    – G__
    Feb 11 '15 at 0:28
  • No, in between sets of exercises.
    – PsiX
    Feb 11 '15 at 15:35

Unless you have a condition that requires specific monitoring and fluid intake, weighing yourself during a workout is of an academic interest, nothing more. There are studies that show a certain amount of weight loss during exercise can have a detrimental effect, but just replacing fluid doesn't account for the muscle glycogen loss and other factors.

If you are monitoring weight for gain/loss, once a day under the same conditions is the best way to track it, anything more than that is just for personal interest.

  • what would be a possible condition, that would not prevent you from doing workouts?
    – PsiX
    Feb 13 '15 at 11:28
  • Just one? On any antidiuretic hormone, water I&O has to be monitored to prevent water toxicity. CHF, early renal failure, a few others.
    – JohnP
    Feb 13 '15 at 14:10

I personally do it just because I do not own a scale and I have down time before sets. I'm sure a lot of people do it for similar reasons.

  • moved the embedded question in your answer to a comment on the main question.
    – G__
    Feb 11 '15 at 0:29

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