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How is it possible that I weigh less in the morning than I do when I go to bed?

The food I ate and water I drank during the day is still in my body, it had nowhere to go! How does this happen?


Yes, but mass is always conserved, if I haven't gone to the bathroom or anything during the night, how did the fat simply disappear

Update 2:

I'm amused by people smart *** comments when they don't understand my question. Say I eat a huge amount of food- weigh myself before bed, without going to the bathroom before bed. Then I wake up in the morning and weigh a pound less. How is it possible? I had no way to get rid of the food. I KNOW that you don't eat during the night, but I never got rid of the food I ate during the day. mothafuc kers

Update 3:

who said i'm complaining??????????????

30 Answers

  • ?
    Lv 6
    1 decade ago
    Favorite Answer

    There are a few reasons,

    1. you lose pints of fluids through evaporation during the night.

    2. Usually one of the first things you do when you get up is urinate like a spanish race horse.

    3. all during the night you don't eat, you're on a fast. That's why the first meal of the day is called breakfast (break fast)

    I hope this helps , for me, I lose 3 pounds during the night.

    Source(s): Three Rivers
  • 1 decade ago

    during the day you eat. During the night you dont. If you sleep for lets say 8 hours. thats 8 whole hours you havent ate a thing. This is why breakfast is so important. It seems like your metabolism is digesting and using food that you ate during the day, so naturally you would weigh less in the morning because you have not eaten in 8 or so more hours versus before you went to bed,,probably a few hours.

  • 1 decade ago

    Your body fluctuates 3-5 pounds during the day

    Your always lighter in the morning

    Over night your body has digested food into nutrients

    Not to mention some of that energy from the food has already been used to breath, pump blood, digestion, brain activity..

    Add: I just told you how its possible. Your not accepting the truth, so why bother asking the question? Either listen or go ask a doctor.

  • 5 years ago

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  • 1 decade ago

    In the morning you haven't eaten anything yet. You're also taller in the morning because gravity hasn't been able to compress your spine and other joints. It's pretty cool.

    But to specifically answer your question, you've converted some of that food and water into heat, and you also move around during the night. Some people also sweat a lot.

  • Miss, this happens to everyone! Personally I weigh 5 lbs less in the morning, that is after I take a piss. But still 5 lbs. Less in the morning than in the evening.

  • 1 decade ago

    Be HAPPY It Disappears before morning, and you weigh less. At least you don't wake up fat! Your body burns calories in the night. My husband goes to bed fat, and wakes up skinny too. Why complain?

  • 1 decade ago

    Sleeping burns calories

    not much though

    im sure you didn't lose 50 lbs let alone 1 whole lb

    i wish sleeping made ppl lose major weight

    like a lb every 8 hours

    id sleep all day

  • 1 decade ago

    Your body is constantly burning up energy to run your heart, your brain, your internal organs. It burns off the food in your stomach and bloodstream, then burns off stored fat when you run out.

    The water you drank gets evaporated in your breath and in tiny amounts through your skin....more so when you sweat even you sleep (room may be hot).

  • 1 decade ago

    You burn calories when you sleep. If you weigh half a pound less, then that means you burned approximately 1,750 calories during the night because 3,500 calories is equal to one pound.


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