#1  
Old 07-29-2017, 01:59 PM
A Dodgy Dude A Dodgy Dude is offline
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So where did the weight go?

Last night I weighed myself before bed. I did it five times over the course of an hour and the average of the five reading was 234.8 lbs.

I went to bed and slept for 7 1/2 hours.

This morning I got up and weighed myself before going to the bathroom. Again, five times over the course of an hour. The average of the five readings was 233.2 lbs.

So ... where did the 1.6 lbs of weight go?
  #2  
Old 07-29-2017, 02:03 PM
John Mace John Mace is offline
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Did you breathe when you were sleeping? Did you keep the cells in your body alive? That takes energy. Also, did you sweat, or lose any moisture from the breathing?

Last edited by John Mace; 07-29-2017 at 02:04 PM.
  #3  
Old 07-29-2017, 02:07 PM
Darren Garrison Darren Garrison is offline
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There was once a guy who weighed people just before and just after they died, and claimed that after death they weighed a bit less, attributing that difference in weight to the departed soul. Are you feeling particularly soulless today?
  #4  
Old 07-29-2017, 02:32 PM
shiftless shiftless is offline
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Hey! Wait a minute! I was 1.6 pounds heavier this morning. Please pick up your missing weight as soon as possible.

Last edited by shiftless; 07-29-2017 at 02:33 PM.
  #5  
Old 07-29-2017, 03:01 PM
Darren Garrison Darren Garrison is offline
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You know, I'm beginning to think that there are an infinite number of Straight Dope columns and forum threads, because just about every topic I can google for comes up with a hint. I google for the amount of water lost on average by a human at rest, clicked on one of the first links, which happened to be in the Washington City Paper--and it was a Straight Dope column. According to the column, the "average healthy young male averages about 25 milliliters per hour, or 200 milliliters per eight hours of sleep." Assuming that you aren't too far off of that, you lost around 7 ounces of water that way, or around 0.43 pounds. So that leaves only 1.14 pounds for your departed soul.
  #6  
Old 07-29-2017, 03:09 PM
Chronos Chronos is online now
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You were excreting all night. It may surprise you to learn that the body's primary excretory organ is not the kidneys, nor the colon, but the lungs.
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Old 07-29-2017, 03:34 PM
Siam Sam Siam Sam is offline
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You snored it out.
  #8  
Old 07-29-2017, 05:07 PM
DSeid DSeid is online now
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Quote:
Originally Posted by Darren Garrison View Post
You know, I'm beginning to think that there are an infinite number of Straight Dope columns and forum threads, because just about every topic I can google for comes up with a hint. I google for the amount of water lost on average by a human at rest, clicked on one of the first links, which happened to be in the Washington City Paper--and it was a Straight Dope column. According to the column, the "average healthy young male averages about 25 milliliters per hour, or 200 milliliters per eight hours of sleep." Assuming that you aren't too far off of that, you lost around 7 ounces of water that way, or around 0.43 pounds. So that leaves only 1.14 pounds for your departed soul.

And a previous (2012) forum thread!


Once interesting, to me at least, aside in that one was the note that one loses more while asleep X time than quiet awake the same time.

The reason, apparently, is that one sweats more during slow wave sleep.

Still most of the loss is via respiration.
  #9  
Old 07-29-2017, 05:12 PM
John Mace John Mace is offline
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And Dreams. Each dream weighs at least 6 ounces. Don't forget about the dreams!
  #10  
Old 07-29-2017, 05:16 PM
Darren Garrison Darren Garrison is offline
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And Dreams. Each dream weighs at least 6 ounces. Don't forget about the dreams!
Is that dry weight, or a wet dream?
  #11  
Old 07-29-2017, 05:30 PM
cochrane cochrane is offline
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Originally Posted by Darren Garrison View Post
There was once a guy who weighed people just before and just after they died, and claimed that after death they weighed a bit less, attributing that difference in weight to the departed soul. Are you feeling particularly soulless today?
Joe Piscopo used to imitate Andy Rooney. One of the things he would say as Rooney was, "Ya ever notice that when you're born, everybody wants to know how much you weigh, but nobody wants to know when you die? You're never gonna hear, 'Rudy Vallee died today. He weighed 158 pounds.'"
  #12  
Old 07-29-2017, 10:52 PM
Senegoid Senegoid is online now
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Originally Posted by Chronos View Post
You were excreting all night. It may surprise you to learn that the body's primary excretory organ is not the kidneys, nor the colon, but the lungs.
Perhaps the sweat glands too, at certain times of the year.

I engage in a recreational activity (which I've discussed elsewhere on this board) that entails being outdoors in the sun for much of the day. It this climate, at this time of year, that entails a LOT of sweating -- we are constantly being reminded to stay hydrated! The club provides bottles of water which we go through like it was water.

But wait, there's more! Back at home, I sweat like a broken-off fire hydrant all afternoon and evening, and it only barely slackens off all night.

That's gotta be a lotta water. And water is heavy !

Last edited by Senegoid; 07-29-2017 at 10:52 PM.
  #13  
Old 07-29-2017, 10:52 PM
Chimera Chimera is offline
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Bathroom/Home scales aren't known for being all that accurate.
  #14  
Old 07-30-2017, 07:09 AM
Mean Mr. Mustard Mean Mr. Mustard is offline
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Did you have one of those dreams where someone is chasing you?


mmm
  #15  
Old 07-30-2017, 07:26 AM
Robot Arm Robot Arm is online now
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Originally Posted by Chimera View Post
Bathroom/Home scales aren't known for being all that accurate.
I have a home scale with a digital display; I don't know how accurate it is, but when I first got it I was surprised how repeatable it is. If I weigh myself once, and then again five minutes later, it will be the same number.

I do question its resolution, though. The display reads to the 1/10 of a pound, but the number after the decimal is always even, so at best it's 1/5 of a pound. But I think it's much worse than that. Over time I noticed that certain numbers never came up. I'd weigh (for example) 207.6, or 206.2, but never anything in between. I don't know exactly why it does that, but there's definitely some rounding going on.
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Old 07-30-2017, 10:12 AM
DSeid DSeid is online now
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Interestingly this thread had a weight loss of 1.6 pounds, the last one had a weight loss of 1.5 pounds, and the study linked to in the last thread had 2 pounds.

That really is the range of loss over night. Mostly water (and that mostly respired out), and some carbon loss from sugars burned overnight. The SD column that claimed, without citation, only 200 ml (about 7 ounces) of water loss overnight is I think off.

The home scale is generally fairly reliable with itself, even if not accurate ... IOW it may not reflect true weight, it may be off by a pound or so one direction or so, but it is generally consistently so over periods of time of a few days anyway.
  #17  
Old 07-30-2017, 11:43 PM
elfkin477 elfkin477 is offline
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Originally Posted by DSeid View Post
The SD column that claimed, without citation, only 200 ml (about 7 ounces) of water loss overnight is I think off.
Hmm. That's weight exhaled, though. Hey OP, one of the very first things I do when I wake in the morning is get up to pee. This seems to be common. Did you weigh yourself before or after emptying your bladder?
  #18  
Old 07-31-2017, 12:04 AM
DSeid DSeid is online now
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Hmm. That's weight exhaled, though. Hey OP, one of the very first things I do when I wake in the morning is get up to pee. This seems to be common. Did you weigh yourself before or after emptying your bladder?
No, "Cecil" explicitly claimed as both exhaled and perspired water loss. Did not include the carbon loss but that is a lesser amount.

The op also explicitly stated: "weighed myself before going to the bathroom".

Now of course some of us don't make it through the night without getting up and having some ... water ... and nitrogen and other ... losses. But our op sleeps through and weighed several times before losing that not so wee little bit.
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Old 07-31-2017, 06:27 PM
Gatopescado Gatopescado is offline
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I loose about a pound of Angst in my sleep, but it is replaced by Despair when I wake up in the morning.
  #20  
Old 07-31-2017, 07:03 PM
Little Nemo Little Nemo is offline
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Originally Posted by cochrane View Post
Joe Piscopo used to imitate Andy Rooney. One of the things he would say as Rooney was, "Ya ever notice that when you're born, everybody wants to know how much you weigh, but nobody wants to know when you die? You're never gonna hear, 'Rudy Vallee died today. He weighed 158 pounds.'"
That wasn't true for Karen Carpenter.
  #21  
Old 07-31-2017, 07:03 PM
elfkin477 elfkin477 is offline
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The op also explicitly stated: "weighed myself before going to the bathroom".
Yeah but if you look up articles about "how often should you go to the bathroom" you'll find lots where people just mean defecate.
  #22  
Old 07-31-2017, 11:07 PM
Chessic Sense Chessic Sense is offline
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Quote:
Originally Posted by cochrane View Post
Joe Piscopo used to imitate Andy Rooney. One of the things he would say as Rooney was, "Ya ever notice that when you're born, everybody wants to know how much you weigh, but nobody wants to know when you die? You're never gonna hear, 'Rudy Vallee died today. He weighed 158 pounds.'"
You would if Rudy Vallee died propelling his body through someone else's orifice. You likewise never hear anyone saying "Cute baby. How old was he when he was born?" either.

Last edited by Chessic Sense; 07-31-2017 at 11:08 PM.
  #23  
Old 08-01-2017, 08:09 AM
GrumpyBunny GrumpyBunny is offline
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Did you poop?
  #24  
Old 08-01-2017, 08:50 AM
clairobscur clairobscur is offline
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Originally Posted by Robot Arm View Post
I have a home scale with a digital display; I don't know how accurate it is, but when I first got it I was surprised how repeatable it is. If I weigh myself once, and then again five minutes later, it will be the same number.
So repeatable in fact that I wondered if they didn't keep in memoiry the last reading and display it again if the next one is close enough. For instance, if I weight myself, go to pee and weight myself again, I get the exact same weight, which shouldn't happen if the scale is as accurate as it appears (1/10th of a kilo) nor if *isn't* very accurate.
  #25  
Old 08-01-2017, 11:21 AM
Colophon Colophon is offline
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Originally Posted by Robot Arm View Post
But I think it's much worse than that. Over time I noticed that certain numbers never came up. I'd weigh (for example) 207.6, or 206.2, but never anything in between. I don't know exactly why it does that, but there's definitely some rounding going on.
Maybe it actually weighs in intervals of (say) 100 grams, and then converts that to pounds if you have it set to pounds?

As for the weight loss, metabolism converts some the carbon in your body into carbon dioxide, which leaves your body overnight and melts the glaciers.
  #26  
Old 08-01-2017, 11:30 AM
Quimby Quimby is online now
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It's a common myth that people swallow eight spiders every night while they sleep. The truth is eight spiders actually escape from our mouths every night. There's your answer.
  #27  
Old 08-01-2017, 08:12 PM
DSeid DSeid is online now
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It's a common myth that people swallow eight spiders every night while they sleep. The truth is eight spiders actually escape from our mouths every night. There's your answer.
And given that the weight lost over night is typically about a pound and a half we're taking eight large tarantulas people! That aint butterflies you're feeling ... just sayin'.
  #28  
Old 08-01-2017, 09:03 PM
Weisshund Weisshund is offline
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That wasn't true for Karen Carpenter.
That's because she went from cute to dead at 58 pounds wet.
Weight being the reason she was dead

Or more correctly the cause of the weight.
  #29  
Old 08-10-2017, 01:35 PM
Corner Case Corner Case is offline
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You sleep walk at night, go pee, and reset the scale. And that's why you have those bruises you can't remember getting. And why your neighbor's house looked so familiar when they invited you to their Christmas party.
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