Page 1 of 3 123 LastLast
Results 1 to 10 of 21

Thread: What happens to weight when we sleep? page

  1. #1
    adamm's Avatar
    adamm is offline Senior Member
    Join Date
    Sep 2011
    Location
    MD
    Posts
    316

    What happens to weight when we sleep?

    Primal Fuel
    So I'm assuming I'm not unusual here, and I tend to lose 1 to 1.5 kgs of weight overnight. I weigh myself before bed, and I weigh myself when I wake up, and there is a 1 to 1.5 kg difference. And yes, I'm always lighter in the morning.

    So what is lost? I just do not believe that I sweat and exhale 1.5kg of water over the course of 8 or 9 hours, I certainly don't mess my bed (or get up to pee in the middle of the night).

    This has been bugging me for a while. Any ideas?

    --Me

  2. #2
    Mr. Anthony's Avatar
    Mr. Anthony is online now Senior Member
    Join Date
    Aug 2012
    Location
    Colorado
    Posts
    2,451
    Your soul leaves.

    Sent via lightsaber

  3. #3
    RichMahogany's Avatar
    RichMahogany is online now Senior Member
    Join Date
    Jan 2012
    Posts
    7,528
    It's as you suggested. Mostly water weight, and much of it through respiration.

    If you woke up heavier, we'd have a real conundrum. But the slight weight loss is to be expected.
    The Champagne of Beards

  4. #4
    adamm's Avatar
    adamm is offline Senior Member
    Join Date
    Sep 2011
    Location
    MD
    Posts
    316
    Yeah, but 1 to 1.5kg is A LOT of water!

    --Me

  5. #5
    RichMahogany's Avatar
    RichMahogany is online now Senior Member
    Join Date
    Jan 2012
    Posts
    7,528
    Quote Originally Posted by adamm View Post
    Yeah, but 1 to 1.5kg is A LOT of water!

    --Me
    Go breathe on a mirror. What happens? What's the moisture content of your expelled breath? Multiply that by 9 hours. It IS a lot of water.
    The Champagne of Beards

  6. #6
    accidentalpancake's Avatar
    accidentalpancake is offline Senior Member
    Join Date
    Apr 2013
    Location
    Texas
    Posts
    521
    Quote Originally Posted by adamm View Post
    Yeah, but 1 to 1.5kg is A LOT of water!

    --Me
    That's a light day of loss for me. Of course, I usually have to "relieve" myself first thing as well, so there's a bit more there.
    I got 99 problems but a pancake ain't one...

    My Journal

    Height: 6'3"
    SW (Feb 2012): 278
    SBF: 26% (Scale)
    CW (May 2014): 198
    CBF: 14.5% (Scale)
    GW: ~190-205
    GBF: ~12%

  7. #7
    ryanmercer's Avatar
    ryanmercer is offline Senior Member
    Join Date
    Dec 2012
    Location
    Speedway, IN
    Posts
    1,092
    Respiration, perspiration, shed skin, energy useage. IIRC you respire about a liter of water a day.

    At 4C a liter of water weighs around 1KG.
    -Ryan Mercer my blog and Genco Peptides my small biz

  8. #8
    adamm's Avatar
    adamm is offline Senior Member
    Join Date
    Sep 2011
    Location
    MD
    Posts
    316
    Quote Originally Posted by ryanmercer View Post
    Respiration, perspiration, shed skin, energy useage. IIRC you respire about a liter of water a day.

    At 4C a liter of water weighs around 1KG.
    Yeah, well. If you respire 1 liter of water (or 1 kg of water) a day, and you sleep for 8 hours, then you are only respiring 1/3 of a litre (or kg). Where is the other 2/3rds + of water?

    --Me

  9. #9
    accidentalpancake's Avatar
    accidentalpancake is offline Senior Member
    Join Date
    Apr 2013
    Location
    Texas
    Posts
    521
    Quote Originally Posted by adamm View Post
    Yeah, well. If you respire 1 liter of water (or 1 kg of water) a day, and you sleep for 8 hours, then you are only respiring 1/3 of a litre (or kg). Where is the other 2/3rds + of water?

    --Me
    That is going to depend heavily on intake, but you're also making the assumption that the respiration occurs evenly throughout the day. Even without looking into it, I can guess that it is a false assumption.
    I got 99 problems but a pancake ain't one...

    My Journal

    Height: 6'3"
    SW (Feb 2012): 278
    SBF: 26% (Scale)
    CW (May 2014): 198
    CBF: 14.5% (Scale)
    GW: ~190-205
    GBF: ~12%

  10. #10
    ryanmercer's Avatar
    ryanmercer is offline Senior Member
    Join Date
    Dec 2012
    Location
    Speedway, IN
    Posts
    1,092
    Primal Blueprint Expert Certification
    Quote Originally Posted by adamm View Post
    Yeah, well. If you respire 1 liter of water (or 1 kg of water) a day, and you sleep for 8 hours, then you are only respiring 1/3 of a litre (or kg). Where is the other 2/3rds + of water?

    --Me
    Energy expenditure... like I said... REM sleep burns more calories than just laying there watching tv a 150lb person is looking at 90-110 kcals an hour while sleeping depending on if in REM or not, sweat (moisture), sweat (fatty secretion from the apocrine sweat glands in your armpits/genitals/anus), you lose something like 50k skin cells a minute (there is something like a billion tons of dead skin cells in the atmosphere, you know when you see dust in a beam of sunlight through a window? Yeah that dust is 80% dead skin cells on average).
    -Ryan Mercer my blog and Genco Peptides my small biz

Page 1 of 3 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •