https://www.testosterone.me/understanding-muscle-fat-impact-body-mass-weight-health
If you’ve ever tried to diet in your life, which most Americans have, you’ve probably felt frustration with the weight scale. You spend two or three weeks working out and eating better only to find that you have just lost a little bit of weight, or perhaps even none at all! Some people even gain a little weight when they start working out. It’s important to realize, however, that the scale never tells the whole story of your dieting journey.
Most people are somewhat aware of the concept that muscle weighs more than fat, but don’t realize the implications. This fact is actually the biggest reason why people get so frustrated with scales when they start working out for health. For people that are trying to drop fat and feel better, it may even be better not to use scales at all, and just trust your health regimen and the mirror. One of the many reasons that diets fail is because people focus only on the scale and lose faith in their ability to lose weight.
Muscle Vs. Fat