Which of the following would create the second heart sound? a. closing of the valves when blood leaves the heart b. opening of the valves when blood moves out of the heart c. blood moving to the ventricles d. blood moving out of the atrium

A.Closing of the values when blood leaves the heart

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.