Training is the key to Improved Metabolism.
When it comes to making ATP, you know that you need a starting fuel (carbohydrates, phosphocreatine, or fat) and then a way to transform the molecules to get the energy out of them. So what magic ingredient transforms the molecules?
Answer is B: Enzymes!
As we explain earlier, enzymes are the components that drive chemical reactions. What's particlulary interesting - and helpful in the context of improving performance - is that you can created more enzymes. How? By training!!
The key is to tailor the training needs to the type of enzyme changes you want.