Trainers often comfort their clients who are concerned about what the scale is saying by telling them that they’re not losing a lot of overall weight because muscle weighs more than fat. Not exactly true. One pound of muscle weighs the same as one pound of fat. So does one pound of anything. The confusion lies not in the weight of the substance, but in its density. Muscle is much denser than fat so it takes up less room, meaning the more muscle you have, the smaller and sleeker you will look. So keep hitting those weights.