Number two. A warm up is a light exercise preceding an intense workout. It is not responsible for most muscle gains, but allows your muscles to perform better and lessens the risks of injury.
Your muscles. Some muscles are “voluntary.” They
are the ones you control, the ones that let you exercise—or
relax. Some muscles are “involuntary.” They just do their
job with no effort on your part—like your heart muscles.
In physical fitness, body compositionis used to describe the percentages offat, bone, water and muscle in human bodies. Because muscular tissue takes up less space in our body than fattissue, our body composition, as well as our weight, determines leanness.
hope this is what you meant
