Which of the following statements is true? a. athletic performance peaks in both men and women between ages 20 to 30. b. on average, a woman's athletic ability will peak at a later age than a man's will. c. people over 40 should not exercise strenuously. d. a younger athlete will always beat an older one.

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.