I was parked across the street form the fire station this morning returning books to the library.  The  firemen were doing their exercises. I watched in wonder as Each one did one activity and then stopped and moved on to the next activity.  The activities included dragging a heavy body, across the driveway, hitting a huge tire with a sledge hammer, doing pushups, doing sit ups.  walking with weights in their hands and running. They were in good shape.  I was particularly interested in the hitting the tire with the sledge hammer.