Well, yes and no. First, one pound is one pound. Period. It doesn’t matter if we’re talking about one pound of fat, muscle, or cotton balls. One pound is one pound.
However, if you were to put one pound of fat on a table in front of you, and then place one pound of muscle next to it, the pound of fat would take up more space than the pound of muscle. Fat is kind of fluffy stuff that jiggles and spreads out. But muscle has greater density and therefore takes up less space.
Most important, remember that your metabolism must speed up just to maintain your new muscle, making you a more efficient fat burning machine. One the other hand, there is no limit to the amount of fat a flabby, non-exerciser can store on his or her body. Sounds awful, doesn’t it?
And it is