Which statement BEST describes an organ? the basic unit of all living things; a building block
the smallest unit in a system that can function on its own
the process in which tissues combine
A group of tissues joined together to perform a specific function

A group of tissues joined together to perform a function

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.