Does muscle really weigh more than fat?

Also, if you have the calories left and lets say you are hungry at 11:30 at night, do you think that it's just wrong to have a peanut butter and jelly sandwich especially if you are only using have of the portions, I'm really struggling here.. I'm frustrated and I am pissed at myself.. Would you have that sandwich that late at night or would you just say screw it, I'm just going to bed? I'm also running 4-5 days a week and not eating those calories as well
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Replies

  • peachyfuzzle
    peachyfuzzle Posts: 1,122 Member
    Muscle weighs more than fat per unit volume, but 1lb of muscle still equals 1lb of fat. The amount of space they take up is different.

    Cue the fighting now...
  • Hornsby
    Hornsby Posts: 10,322 Member
    Yes, muscles weighs more than fat if they are the same volume.

    If you have the calories and are hungry, eat. Times don't matter.
  • janejellyroll
    janejellyroll Posts: 25,763 Member
    I don't think eating a sandwich is ever "wrong." There are choices that fit our goals and choices that don't. If you have the calories left, why would you NOT eat a sandwich?

    Why aren't you eating your exercise calories back?
  • jemhh
    jemhh Posts: 14,261 Member
    1 cubic inch of muscle weighs more than 1 cubic inch of fat, as sliced off the body and not compressed beyond its natural state. Here's a better visual:

    fat-v-muscle.jpg

    You can eat your calories no matter what time of day it is. As long as you can sleep after eating, go for it.

    And MFP's goal is set up in a way that you are supposed to eat your exercise calories. The exercise calorie values in the database may or may not be accurate but I'd eat at least 50% of the calories earned by running.
  • diannethegeek
    diannethegeek Posts: 14,776 Member
    Muscle is denser than fat. Which means that if you're comparing equal volumes, yes, the muscle will weigh more. On the flip side, if you're comparing equal weights then the muscle will be smaller.

    As for the sandwich, if it fits into your calorie and nutrition goals and won't cause you any sleeping problems, then I don't see a problem. Eating late at night shouldn't hurt your weight loss, so it's really a matter of personal preference.
  • RGv2
    RGv2 Posts: 5,789 Member
    Hornsby wrote: »
    Yes, muscles weighs more than fat if they are the same volume.

    If you have the calories and are hungry, eat. Times don't matter.

    ^^This
    Why aren't you eating your exercise calories back?

    and This
  • zamphir66
    zamphir66 Posts: 582 Member
    Seconded: Why wouldn't you have the sandwich? Do you think there's something wrong with eating at that time at night? What are you angry about?
  • sofaking6
    sofaking6 Posts: 4,589 Member
    Also, if you have the calories left and lets say you are hungry at 11:30 at night, do you think that it's just wrong to have a peanut butter and jelly sandwich especially if you are only using have of the portions, I'm really struggling here.. I'm frustrated and I am pissed at myself.. Would you have that sandwich that late at night or would you just say screw it, I'm just going to bed? I'm also running 4-5 days a week and not eating those calories as well

    You're making it too hard on yourself, no wonder you're frustrated and pissed! I wouldn't go to bed hungry really ever, it would make me sleep poorly and I hate being tired. Thinking that the less you can eat the better you'll do is flawed specifically because it will make you miserable.

    Please, please, eat a sandwich. :)

  • sgthaggard
    sgthaggard Posts: 581 Member
    I wouldn't think twice about eating the sandwich.
  • zamphir66
    zamphir66 Posts: 582 Member
    edited April 2015
    sgthaggard wrote: »
    I wouldn't think twice about eating the sandwich.

    I wouldn't think once. Sandwich to mouth is just a reflex for me. Lol.

  • SillyCat1975
    SillyCat1975 Posts: 328 Member
    I ate the sandwich lol, I'm frustrated because no matter what I don't see that damn scale moving, I know I need to get rid of that scale. I don't eat the calories that I earned from exercise is because I feel like I've undone everything that I've worked for by exercising. I'm afraid of late night eating, it's what has gotten me here now, but granted I would eat a ton of sugar,not do anything during the day and at bedtime eat some more, I mean excessive. I know this isn't an easy road to travel and it won't come off over night, I just don't like on weigh in day seeing a 2 pound increase on the scale as opposed to a loss, I would settle for like a 3 oz loss, something...
  • diannethegeek
    diannethegeek Posts: 14,776 Member
    It looks like you're getting good answers here, but I want to add another piece of information that you didn't ask about specifically. The muscle vs. fat thing usually comes up when people have started exercising and have seen a small increase in weight that comes along with it. Muscle is pretty hard to build and it's slow to increase. Most people don't put on significant amounts of muscle accidentally. There may be some newbie gains, but they aren't pounds and pounds of muscle overnight. I don't know your circumstance or why you're asking, but it's really common for people to retain water in their muscles after they start exercising to help cushion and repair those sore muscles. This can cause a slight bump up on the scale and give the muscles a "pumped" look that some people mistake for new muscle gain. Just posting this in case it's useful for someone.
  • SillyCat1975
    SillyCat1975 Posts: 328 Member
    jemhh wrote: »
    1 cubic inch of muscle weighs more than 1 cubic inch of fat, as sliced off the body and not compressed beyond its natural state. Here's a better visual:

    fat-v-muscle.jpg

    You can eat your calories no matter what time of day it is. As long as you can sleep after eating, go for it.

    And MFP's goal is set up in a way that you are supposed to eat your exercise calories. The exercise calorie values in the database may or may not be accurate but I'd eat at least 50% of the calories earned by running.

    Thank you, I needed to see that picture! :smile:
  • jemhh
    jemhh Posts: 14,261 Member
    It looks like you're getting good answers here, but I want to add another piece of information that you didn't ask about specifically. The muscle vs. fat thing usually comes up when people have started exercising and have seen a small increase in weight that comes along with it. Muscle is pretty hard to build and it's slow to increase. Most people don't put on significant amounts of muscle accidentally. There may be some newbie gains, but they aren't pounds and pounds of muscle overnight. I don't know your circumstance or why you're asking, but it's really common for people to retain water in their muscles after they start exercising to help cushion and repair those sore muscles. This can cause a slight bump up on the scale and give the muscles a "pumped" look that some people mistake for new muscle gain. Just posting this in case it's useful for someone.

    Very good points. Be sure to read this, OP!
  • SillyCat1975
    SillyCat1975 Posts: 328 Member
    I've been running, I started off slowly but I have been growing in speed over time and my endurance is growing, I guess I just get down on myself when I should look at what I've accomplished in the last 44 days.
  • SLLRunner
    SLLRunner Posts: 12,943 Member
    Also, if you have the calories left and lets say you are hungry at 11:30 at night, do you think that it's just wrong to have a peanut butter and jelly sandwich especially if you are only using have of the portions, I'm really struggling here.. I'm frustrated and I am pissed at myself.. Would you have that sandwich that late at night or would you just say screw it, I'm just going to bed? I'm also running 4-5 days a week and not eating those calories as well

    Yes, a pound is a pound no matter how you look at it, it's just that the muscle looks smaller than fat. That's really what people mean when they say muscle weighs more than fat.

    If I had calories left from my day and I wanted that peanut butter and jelly sandwich, I would weigh ingredients, log them, and eat that wonderful PB sandwich.

    If I didn't have calories left from my day, but had some calories left over from another day during the week, and I wanted that peanut butter and jelly sandwich, I would weigh ingredients, log them, and eat that wonderful PB sandwich.

    I might also plan to eat less tomorrow just so I could have that peanut butter and jelly sandwich.

    It all depends on how much I want that PB sandwich. :)
  • SillyCat1975
    SillyCat1975 Posts: 328 Member
    I never knew that I should eat back 50% of what I had burned, I thought that would throw me over and make me gain the weight, I can't tell you how much I truly appreciate you honest answers. I need to take them and apply them to every day life.
  • janejellyroll
    janejellyroll Posts: 25,763 Member
    I ate the sandwich lol, I'm frustrated because no matter what I don't see that damn scale moving, I know I need to get rid of that scale. I don't eat the calories that I earned from exercise is because I feel like I've undone everything that I've worked for by exercising. I'm afraid of late night eating, it's what has gotten me here now, but granted I would eat a ton of sugar,not do anything during the day and at bedtime eat some more, I mean excessive. I know this isn't an easy road to travel and it won't come off over night, I just don't like on weigh in day seeing a 2 pound increase on the scale as opposed to a loss, I would settle for like a 3 oz loss, something...

    MFP is set up so that you have a deficit built in without any exercise. This deficit will result in weight loss. If you increase the size of the deficit through exercise, then you can eat those calories back -- it leaves your original deficit untouched.

    If you are burning a lot of calories and not eating them back, then you can wind up with a net calorie count that is too low (that is, I eat 1,400 calories and then burn 400 through running -- my net calories are now 1,000). You aren't undoing anything by eating exercise calories back. The only thing you need to watch out for is that MFP databases and gym equipment often over-estimate calorie burns -- for this reason, many of us eat back 50-75% of your calories.

    If your mood and energy are suffering, this is something you should pay attention to.

    Now if you aren't losing weight, you may have a logging issue. I don't know how long it has been since you've seen a loss, but if you open your diary you may get some good advice. It's possible that you are eating more than you think that you are.
  • Camo_xxx
    Camo_xxx Posts: 1,112 Member
    Muscle density is 1.06 g/ml and fat density is (about) 0.9
    g/ml. Thus, one liter of muscle would weight 1.06 kg and one liter of
    fat would weight 0.9 kg. In other words, muscle is about 18% denser
    than fat.
  • SLLRunner
    SLLRunner Posts: 12,943 Member
    I ate the sandwich lol, I'm frustrated because no matter what I don't see that damn scale moving, I know I need to get rid of that scale. I don't eat the calories that I earned from exercise is because I feel like I've undone everything that I've worked for by exercising. I'm afraid of late night eating, it's what has gotten me here now, but granted I would eat a ton of sugar,not do anything during the day and at bedtime eat some more, I mean excessive. I know this isn't an easy road to travel and it won't come off over night, I just don't like on weigh in day seeing a 2 pound increase on the scale as opposed to a loss, I would settle for like a 3 oz loss, something...

    Can you open your diary so we can give you more specific help?