Describe the changes that happen to the bones, muscles, and joints as a person ages and what a person can do about it. (site 2)

In a joint, bones do not directly contact each other. Instead, they are cushioned by cartilage in the joint, synovial membranes around the joint, and fluid. Muscles provide the force and strength to move the body. ... People lose bone mass or density as they age, especially women after menopause.
hope this helps xx

Because you get to live without any hoses bothering u