Office workers spend a large part of their workday sitting down. Too much sitting seems bad for people's health and puts them at risk for premature death. Workstation alternatives that allow desk work to be done while standing, walking, biking, or stepping reduce the total time spent sitting without affecting work performance much. Moreover, these alternatives seem acceptable to users. Future research is needed to determine long-term effects and whether results apply to different working populations. Ergonomists play an important role in developing recommendations for the setup and use of alternative workstations and in improving their feasibility.