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Almost all swimming is anaerobic, when you are swimming at 80/90 percent of your maximum heat rate the muscles start to build up lactic acid to a point where you have to stop. The biggest goal for swimming is to train near your lactate threshold and build it over time.

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Their are 5 steps in part 1 which is the "Energy-requiring phase" of Glycolysis.

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Step 1: An phosphate group is transferred

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Glucose-6-phosphate is converted into its isomer fructose-6-phosphate.

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A phosphate group is transferred from ATP to fructose-6-phosphate, producing fructose-1,6-bisphosphate.

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Fructose-1,6-bisphosphate is split into two three-carbon sugars dihydroxyacetone phosphate and glyceraldehyde-3-phosphate.

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DHAP is converted into glyceraldehyde-3-phosphate.

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The next 5 steps are "Energy-releasing phase" of Glycolysis

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Glyceraldehyde-3-phosphate is oxidized and NDA+ is reduced to NADH and H

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1,3-bisphosphoglycerate donates one of its phosphate groups to ATD making it an ATP

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3-phosphoglycerate is converted into its isomer 2-phosphoglycerate.

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2-phosphoglycerate loses a molecule of water, becoming phosphoenolpyruvate (PEP)

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PEP donates it its phosphate group to ADP making ATP
This process makes 2 ATP's and 2 NADH's

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The pyruvate that was made during Glycolysis undergoes and oxidation reaction to become Acetyl CoA

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After the Pyruvate Oxidation were the pyruvate becomes Acetyl CoA it undergoes the kerbs cycle twice. Their are 8 steps as seen from the diagram below. One cycle makes one molecule of ATP and three molecules of NADH.

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after the Kreds cycle comes the The Electron Transport Chain contains 4 complex's were enzymes are oxidation and reduction

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Glucose‐6‐phosphate formation Hexokinase is feedback inhibited by its product.

Fructose‐6‐phosphate ->  fructose‐1,6‐bisphosphate. ATP's inhibits the phosphofructokinase reaction along with citrate.

Phosphoenol pyruvate -> pyruvate.
ATP's also inhibits pyruvate kinase along with acetyl‐CoA

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examples of oxidation and reduction in cellular respiration 

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examples of oxidation and reduction in cellular respiration 

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When NAD and FADH gain electrons they are being reduced
while when glyceraldehyde-3-phosphate and pyruvateare being oxidized along with FADH2 and NADH when they give away their electrons.