Health recommendations state that for young elderly systematic physical activi-ties at moderate intensity for at least 150 minutes per week are required to help them stay in good shape for their senior years. We have found that young el-derly readily gets started with a physical activity (PA) program but there is some challenge to make them stay with this program. We have learned that a PA program should build on activities that users find meaningful and/or best suit-ed for their history of PA and their present physical capacity. Support from dig-ital services to find meaningful and suitable programs can make a difference. We work out developments of the UTAUT to find drivers that could help build a sustained adoption of PA programs and propose a model for Systemat-ic Physical Activity Programs (SysPAP).