Muscle Weighs More Than Fat: Fact or Fiction?

So, I was once told by a person that muscle does NOT weigh more than fat.  That it's a myth.  I want to facepalm this so hard.

So let's get the basic argument against this statement out of the way: "A pound of fat weighs the same as a pound of muscle".  DUH.  That's also saying that my body does not weigh more than AIR, because 230 pounds of carbon and water weighs the same as 230 pounds of nitrogen and oxygen.

I find it hard to believe that people don't think about density.  When you say something weighs more than another thing, you're comparing density, not weight.  The idea is that with two identically-sized masses, the weight will be different.

So, for my 230 pounds, I'm 5'6", and about 48" round at the widest point.  But to equal that in AIR, it'd take a few cubic MILES.  So is it really a fair assessment to say that we weigh the same?  No.  So this disparity needs to be in mind when comparing fat and muscle.

There is some contention on how much more dense muscle is than fat.  This depends on several factors of the individual.  But the estimates range from an 18% volume increase, to as much as 300%!!!  That means the fat will be 1/5 as large for the same weight, or maybe even 3 times as large!  THIS is what people mean when they say muscle weighs more.  It is more dense.

So yes, muscle weighs more than fat, because the same volume will weigh more if it's muscle, versus the same volume of fat.  And volume is what makes you look ...well....fat.