An impact absorbing exercise device comprising: a stepping platform having an upper surface and a lower surface; and an impact absorbing panel, the impact absorbing panel including: a resilient wear surface, and an impact absorbing material positioned between the resilient wear surface and the stepping platform; characterised in that: one or more riser assemblies (24,26,28,30,32,34) releasably coupleable to the stepping platform and configured to elevate the stepping platform above a worksurface; the impact absorbing panel is configured to be releasably coupled to the upper surface of the stepping platform; a releasable attachment system (54, 66) configured to releasably attach the impact absorbing panel to the upper surface of the stepping platform; wherein the releasable attachment system (54, 66) includes one or more pin assemblies (56, 58) rigidly affixed to a lower surface of the impact absorbing panel, wherein the one or more pin assemblies (56, 58) are configured to releasably attach the impact absorbing panel to the upper surface of the stepping platform. a stepping platform having an upper surface and a lower surface; and an impact absorbing panel, the impact absorbing panel including: a resilient wear surface, and an impact absorbing material positioned between the resilient wear surface and the stepping platform; characterised in that: one or more riser assemblies (24,26,28,30,32,34) releasably coupleable to the stepping platform and configured to elevate the stepping platform above a worksurface; the impact absorbing panel is configured to be releasably coupled to the upper surface of the stepping platform; a releasable attachment system (54, 66) configured to releasably attach the impact absorbing panel to the upper surface of the stepping platform; wherein the releasable attachment system (54, 66) includes one or more pin assemblies (56, 58) rigidly affixed to a lower surface of the impact absorbing panel, wherein the one or more pin assemblies (56, 58) are configured to releasably attach the impact absorbing panel to the upper surface of the stepping platform. a resilient wear surface, and an impact absorbing material positioned between the resilient wear surface and the stepping platform; characterised in that: one or more riser assemblies (24,26,28,30,32,34) releasably coupleable to the stepping platform and configured to elevate the stepping platform above a worksurface; the impact absorbing panel is configured to be releasably coupled to the upper surface of the stepping platform; a releasable attachment system (54, 66) configured to releasably attach the impact absorbing panel to the upper surface of the stepping platform; wherein the releasable attachment system (54, 66) includes one or more pin assemblies (56, 58) rigidly affixed to a lower surface of the impact absorbing panel, wherein the one or more pin assemblies (56, 58) are configured to releasably attach the impact absorbing panel to the upper surface of the stepping platform. one or more riser assemblies (24,26,28,30,32,34) releasably coupleable to the stepping platform and configured to elevate the stepping platform above a worksurface; the impact absorbing panel is configured to be releasably coupled to the upper surface of the stepping platform; a releasable attachment system (54, 66) configured to releasably attach the impact absorbing panel to the upper surface of the stepping platform; wherein the releasable attachment system (54, 66) includes one or more pin assemblies (56, 58) rigidly affixed to a lower surface of the impact absorbing panel, wherein the one or more pin assemblies (56, 58) are configured to releasably attach the impact absorbing panel to the upper surface of the stepping platform.