Here's what you need to know about the connection between metabolism and weight — and how exercise helps.
Metabolism is defined as the bodily processes needed to maintain life. But when you hear the word "metabolism" used today, it's usually in reference to weight issues. You may hear someone say, "I can't lose weight because I have a slow metabolism."
While there's some truth to this, other factors — such as how much you eat and exercise — play a much bigger role in your weight than your metabolism does. And while it's true that how much lean body mass you have can affect how many calories you burn at rest, its effect is limited — in part, because you can build only so much lean muscle by strength training.
Here are some other facts about metabolism.
What it is
What can affect your metabolism
The bottom line