For a very simple, basic routine that is probably only useful to someone (like me) who has done nothing for a long time, try something like in this video: https

For a very simple, basic routine that is probably only useful to someone (like me) who has done nothing for a long time, try something like in this video: https://www.youtube.com/watch?v=bCMNMHBY1Dk https://www.youtube.com/watch?v=bCMNMHBY1Dk I did the exercises facing the wall rather than crushing myself on the floor; the primary benefit was in awakening a few back muscles enough so that I would feel the soreness if I was sitting incorrectly.