But the truth is that the metabolism is a lot more complicated than fitness "gurus" may have you think. In fact, your metabolism isn't one specific process or system within the body - it is the sum of many different processes which perform many different roles.
And it's not just how you exercise that influences your metabolism - it's also your environment, your diet, your hormones, your microbiome, your genetics, and more.
This interesting podcast episode discusses why the old way of thinking about metabolism doesn't really make sense with what we have learned in recent decades - and how you can truly make positive changes to your metabolism at any age.