Abstract: An exercise device combining upper and lower body in synchronized movements to encourage neurological development, rehabilitation, learning and orthopedic rehabilitation in children and adults in every situation where appropriately modified stationary exercise equipment can be placed. The exercise device includes a frame; left and right arm assemblies, each supported by the frame and configured to enable pivoting movement relative to the frame; left and right leg assemblies, each supported by the frame and configured to enable rotational movement about a central pivot axis; a drive mechanism supported by the frame and configured to enable contralateral movement of the left arm assembly relative to the right leg assembly, and of the right arm assembly relative to the left arm assembly; where the left and right arm assemblies are adjustable to enable use of the exercise apparatus in both an upright seating configuration and a recumbent seating configuration.