What is creatine?
Your body actually makes its own creatine, by way of your kidney and liver, after you eat protein. Your muscles then convert creatine into creatine phosphate, which is then generated into adenosine triphosphate (ATC), which your body uses for explosive exercise.
Supplement manufacturers have made creatine intake more efficient. Instead of consuming pounds of protein, all you have to do is take the nutrient in powdered, liquid, or pill form.
Also important: Creatine supplementation should be considered complementary to consuming protein, not a replacement for. That’s because creatine and protein work in different ways. In short, creatine leads to more strength during your workout while protein leads to more muscle repair after your workout.