Your muscles are responsible for many aspects of health. For instance:
Strong muscles help hold your skeleton upright; this helps you maintain great posture.
Healthy muscles heal from exertion and injury faster and more effectively.
Muscular strength is responsible for carrying you through the day.
Muscles power walking, running, lifting, carrying, and every other activity required for work, play, and fitness.
Good muscular health supports the function of other physical systems, such as your skeleton.