During short-term exercise (ex:weight-lifting), what is going on biochemical in your body (the muscles, liver, heart, circulation, etc)?

I think that you begin with glucose going into glycolysis,TCA, and oxidative phosphorylation. When you use up the free glucose then the cori cycle will begin with lactate dehydrogenase.

I am confused on if this is the correct approach and where this is occurring in the liver/muscles/everywhere? And what else can I incorporate that is occurring biochemically in this scenario?