What is the significance of the case study ""The Central Park Jogger Case Revisited""? What part did hair analysis play in this case? What part did DNA play in this case?

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Well if you pick a machine to work on and that's gonna be your exercise if you don't stick to that machine your muscle strength your muscle mass rather will change because you haven't been doing it you change something in your exercise routine which changes your body's form of dealing with things for example you might become weaker or stronger depending on what kind of exercises you do in whether or not the machine you picked actually your muscles grow.

It’s a because it says during exercise so they are doing a athletic activity