I'm not complaining but...
This is my 5th day on Atkins and this has happened twice. I weigh myself before going to bed and then weigh myself right when I get up. No bowel movements or urination during the night and same clothing. The scale tells me I have lost 1.5 lbs. This has happenned twice. Where does it go? I checked the bed - lol. Is it all mosture being exhaled, or is my body mass being converted from fat to muscle changing the cell's weight ratio somehow?

Theory 1:Gremlns-The scale gremlins sneak in each night and secretly change your scale up or down... depending on their mood for the day. (lol)

Theory 2:Evaporation - The food you've ingested is modified to liquid in the body and you sweat it out overnight due to erotic dreams and/or being chased by monsters...or was it monsters that want sex?? (lol)

Theory 3:Gas- Your body has pent up enormous amounts of toxic gasses from that bean burrito you snarfed down for lunch or dinner. At night (only), you let out enough gas to fill the hindenburg blimp. Unfortunately, the only evidence for this theory is a sore bum or dead plants/animals in the immediate area. (lol)

Don't know the answer to your question but if you weigh yourself before bed you will be heavier, that's when your body is the most bloated. I can weigh up to 5 lbs more at bedtime than in the AM.

BTW Coolcat ROFLMAO!!!

I believe in the Gremlin theory...

Is there any way I can make the weight gremlins (the happy kind) visit me at least once a week ??

LMAO !

Actually, the moon is also playing a role here. The reason we gain weight in the PM is the same reason we get a high tide, because the moon is exerting a stronger pull on our little section of the planet. If you don't experience at least a SLIGHT weight gain after the sun starts setting, it is probably due to hugely fluctuating water-levels in your body.... normal for people losing aeight, but also a factor we must assimilate into our weigh-ins.
And of course, we usually have 'lost' that weight once we weigh ourselves in the morning. Another reason not to do daily or multiple-times daily weigh-ins.... too many factors that come into play.

It's very normal to gain weight from morning to evening. Remember, the foods that we eat and the liquids that we drink don't magically lose their mass and weight once we chew and swallow them, nor are the immediately eliminated from our bodies. It's very common for me to weigh as much as 5 pounds more at night than I did that morning.
Overnight, we lose water through breathing and sweating/evaporation even if we don't need to get up during the night to urinate. Results? You weigh less in the morning than you did when you went to bed the night before.

I blame overnight weight GAINS on the scale gremlins (may the carbs from a thousand Krispy Kremes find a permanent home on their backsides!).

Hmmmm? Where I live, we get two high/low tides most days, and the tides shift by hours over the course of week/month, but I always weight less at 7 a.m. whether that's near a high or low tide. Gonna have to insist on some proof before I buy this theory.

Nick--I'm with you on that one...

Besides, we all KNOW it's the Whoosh Fairy!!!

Whusssap, smackdaddyo!!!! aka Coolcat.. you are a complete 360 degree RIOT. that was hilarious. Its saturday at 3am.. and i was sitting here feeling so utterly disgusted and depressed.. but ur scientific theories cheered me up tremendously and I want to be your friend! hahaahah. Because Im slowsly but surely running all of mine out of my life! Hooray. LOL Good luck to everybody!! Enjoy the weekend. I'll be here waiting for you all

LMAO Coolcat!!! That was hysterical - thanks for the laugh!

you all have too much time on your hands, lol, and BTW,,,, when the moons rises full I howl and sniff outside,,,,,the next morning I am bloated and full feeling,,LOL,,,,,but I am certain my `late night` meal was high protien....................

waaaooooooooooohhhhooooooooo