What is a common symptom of immobility?

A common symptom of immobility is joint stiffness. This occurs because when a person is unable to move or is inactive for an extended period, the joints can lose their flexibility. This leads to a decrease in the range of motion and can result in discomfort when attempts are made to move those joints again. The lack of movement causes the synovial fluid, which lubricates joints, to be produced less effectively, exacerbating stiffness and discomfort.

In contrast, increased muscle strength, improved balance, and enhanced coordination are generally associated with regular physical activity and movement. Therefore, these options do not align with the effects of immobility on the body, helping to clarify why joint stiffness is the correct choice.