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By the way, I feel compelled to point out that I do not urinate in the shower! Therefore, that can't be the answer either.
Quote from: Joe Negron on 06/04/2009 19:30:02By the way, I feel compelled to point out that I do not urinate in the shower! Therefore, that can't be the answer either.I can't answer your query except to note that it seems as though your weight loss is within the accuracy of your instrument, and how do they calibrate these things?Peeing is OK - it's best to draw the line at taking a dump though 
Well I know the body fat sensors in those scales are supposedly very inaccurate. They rely on passing an electric current through you and measuring the resistance in order to determine your body fat % (fat is more resistive than lean tissue). If you've just gotten out of the shower, you're probably still wet and therefore have less resistance to electrical currents, which leads the scale to decide that you have lower body fat than when you're dry.I'm not sure why you lose weight. The scale probably uses springs or something like that to determine your weight. I guess if you keep the spring in the bathroom and it heats up, that could possibly effect whatever mechanism it uses to tell your weight. Also, if you take a very long and hot shower, you might lose weight in sweat. I know I've managed to lose several pounds of sweat over the course of a long run in the summer heat, but a half pound seems excessive in the shower.