The investigators propose the development of a feasible program to assist in improving the physical capacity of elderly inpatients. Such improvements may translate to cost savings in the form of decreased length of stay, improved discharge disposition, and fewer hospital-related complications, but establishing that is not the purpose of this study. The investigators propose that the most feasible and cost-effective implementation of such a program will utilize a patient care nursing assistant (PCNA) dedicated to carrying out a graded ambulation protocol in eligible patients multiple times daily. A simple and standardized protocol for ambulation will reduce the need for the expertise of a dedicated physical therapist. Additionally, utilizing an existing mechanism for assessing baseline functional capacity, the 6-Clicks score, will eliminate the time and personnel requirements for evaluation of patient eligibility. This score has been validated as a mechanism to assess patient mobility limitations in an acute care setting and is currently used on all patients seen by physical therapy on the inpatient medicine services.