Initiation phase. Participants will be encouraged to perform their upper extremity and lower extremity REST programs twice per week. After the first week, they will follow up with the study PT by telephone to address any questions they may have and to address any difficulties with REST. The PT may adjust their REST program if it proves uncomfortable or overly fatiguing. Participants will continue to perform the REST program with any modifications for the second week after training. They will again follow up with the study PT by telephone at the end of the second week to address any issues. Dr. Cheville will serve as resource for the study PT during the initiation phase in case he/she has any questions regarding symptom control or the safety of REST.