Hey how much does a pound of fat or muscle weigh?
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Ok that was a really bad joke :p. My real question is how much does fat weigh in relation to muscle?

A pound of fat is larger than a pound of muscle by some amount which depends on various factors such as number of cells in the sample, level of hydration, and the moon's gravitational pull on the water in the body.

Dude, you forgot to offset that by the differential of the Nikkei Index :lol:
...ok these bad jokes have got to stop. Let's say all factors are equal, hydration levels, cell count, moon's gravitational pull, whatever. Is there an average? Somebody's got to have done some research on this.

I think you have to rephrase your question so you can get the right answer. At the moment, you are asking the weight of a Pound of muscle and a pound of fat. Your question is flawed becuase a pound of muscle will weigh a pound and visa versa for fat. A pound is 2.2kg or there abouts if your looking for a ratio.

Maybe your question is best directed in the area of Liquid volume. Which i have no idea.

My guess is that a given volume of fat weighs more than the same volume of muscle. I think fat is more dense, but I only say that because it contains 9 kcal of energy per gram whereas muscle which is mostly protein contains 4 kcal of energy per gram. I assume, and could be wrong that there is a direct correlation between density and potential energy. But I'm just talking out of my arse. Why do you want to know?

Dude, you forgot to offset that by the differential of the Nikkei Index :lol:
...ok these bad jokes have got to stop. Let's say all factors are equal, hydration levels, cell count, moon's gravitational pull, whatever. Is there an average? Somebody's got to have done some research on this.


From http://answers.google.com/answers/threadview?id=576481

Summary: 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% denses
than fat. This should not be confused with the "energy density" of
muscle and fat, which may be where you got the 3x figure that you
mention in your question.

But I don't believe this will relate directly to what you see reflected on the scale, as the whole hydration, moon pull blah, blah, blah is usually taken out of these equations.