Your description of the downsides of a gym brought to mind Reinhard Engels' "Shovelglove": wrap something soft around a sledgehammer to protect your floor. Then

Your description of the downsides of a gym brought to mind Reinhard Engels' "Shovelglove": wrap something soft around a sledgehammer to protect your floor. Then do shoveling and similar movements for some short period of time every weekday. He has more instructions and a video: http://www.shovelglove.com http://www.shovelglove.com