Shoulder exercising machines (machines) may include an upper member, a lower member, and a resistance member. The upper member and the lower member may be slidingly engaged with each other. The resistance member may provide resistance with respect to the upper member sliding against the lower member. The resistance member may be at least one elongate elastic member with two opposing terminal ends. The upper member may have at least one handle and an upper surface for supporting at least a portion of a forearm and/or a wrist of a user during exercises with the machine. The user may push or pull the handle and slide the upper member with respect to the lower member while experiencing resistance due to the resistance member.