Answer:
Adolescents, and many adults, take the health of their bone, muscle, and skin for granted. Only when there is a problem such as a broken bone, a muscle sprain, or a skin blemish (especially before an important event) do people think about these vital body systems. Health problems that affect bone, muscle, and skin are common. In fact, muscle and bone problems have prompted the World Health Organization to declare the years 2000–2010 the Bone and Joint Decade.
