Warm-ups and cool-downs can reduce the sudden changes in the body due to exercise can reduce injury are equally important to the body all of the above

The answer would be All of the above

Bruh i jus wanna know wth u got goin on

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.