Well, yes the question can be restated in the sense that the intro of the essay will refer to an exercise that uses the three energy pathways.
"Give an example of an exercise routine utilizing each of the three major energy pathways. How long does the body utilize each pathway as its main energy source? Are the examples you gave specifically designed to utilize that particular pathway or is it just the nature of the exercise?"
Give a short intro para (4 sentences) about the exercise and the 3 pathways.
Give a body para (4 sentences) about the process, how long it takes, the design/nature of the exercise, etc.
Give a short conclusion that summarizes what you said and what it all means. (3 sentences)
I hope that helps!!!! :-) Remember that the first sentence of each paragraph in academic writing should be a TOPIC sentence that tells the main idea.