Peter Attia· MD
your average weight is down by a pound but if I had weighed you on this day last week and this day this week you would think you were up by 2 and a half pounds so people will start doing a calorie deficit diet and they'll say well see I gained weight so this doesn't work no that was a fluid shift from day day-to-day changes in weight are much more dictated by fluid shifts than they are at aost tissue levels