I've been fairly paleo compliant lately and granted I have a lot of weight to lose (80+lbs) so I'm curious about weight loss before my eyes and wondering what could be going on.
I have a digital scale and just for the fun of it, I weigh myself after the last meal of the day, water included and it gives me XXX lbs. When I weigh myself a few hours later, I find I have lost anywhere from 1-2 lbs, sometimes more, and not to be too indelicate here, this is without any intervening trips to the bathroom.
I'm not exercising much now, I'm pretty well hydrated. I even was nibbling on some dark chocolate during that time. Is this some sort of burn kicking in? I'm not complaining one bit, but just fascinated by this and wondering if anyone has noticed this as well.
One thing that has changed is, as I am up in Canada, it has gotten chilly, and it got me thinking to The Four Hour Body and the whole cold therapy for weight loss section in it. I don't bundle up much beyond a jacket, as I typically enjoy the cold, but because of that, find myself exposed to cold weather with few layers. Could this be it?
Edit: Minor grammar fix.
This question is not stupid - I actually think it's pretty interesting. It's a fact that overnight you will lose several pounds, even though you don't go to the bathroom.
How is this possible?
In addition to the water lost through breathing and the skin, you are also exhaling carbon dioxide. The carbon dioxide is a byproduct of the Krebs cycle (aka citric acid cycle) - or more simply, your metabolism. Well, where does that carbon come from? The fat/carbs/protein that are (converted to acetate and then) being burned (oxidized) by your mitochodria in the krebs cycle. So, of course some mass is lost. And its not all water.
Besides, E=MC**2, so if heat is being generated, there must be some mass lost there as well, although I can't say that I understand the details of that as well as the loss of carbon.
Closest answer I could find, after digging. Looks like it is probably respiration, now that the weather is cold, maybe sped up with some cold weather thermogenesis and high protein intake.
May partly explain this question I had and overnight loss as well.
Question closed...lesson learned. Thanks for the enlightened responses from the more experienced members regarding Satan's Poopy Scales. The poopy scales answer has received my check as the best one, just edged out "Santan".
Weight variation within a 24-48 hour period is most often water loss or gain. Weight loss week to week is a better measure. Even then, Santan is known to speak through bathroom scales. I place more trust in the mirror. Even more fundamentally, how are my jeans fitting?
It's probably water loss, either via urination, or evaporation. However, fat is known to do very strange things, and it's not uncommon to lose fat nearly overnight.
See this article. It turns out that fat cells may fill themselves up with water to keep the structure the same when fat is lost, then at some point, they just let go of the water.
Unless you're using a fat loss scale that uses impedance to measure percentages of fat, muscle, water, and bone, a regular scale is useless. Even the impedance scales aren't reliable - they're usually off by 10%-20%, but they're at least a better measure than just plain old weight.
The reason I'm even looking at this is because I lost 2.9 pounds overnight (7 hours) w/o indelicate mass losses, no known amnesia, and multiple weighings before and after. Not a dumb question but read some poorly considered answers. And BTW I am not overweight...
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