As a result of such factors, deconditioning rapidly occurs in older adults when hospitalized.... Deconditioning describes the physiological changes, such as decreased muscle mass, that result from aging and/or immobility and contributes to overall weakness..... This phenomenon occurs for some as early as the second day of hospitalization..... Many patients never regain preadmission functional status after deconditioning occurs...... As a result, these individuals require greater assistance after discharge and may be unable to return home.