I appreciate the suggestion, and have added a few bookmarks on C25k to my to-read pile.
Given my experience today, attempting to add some of the warm-up routines from /r/bodyweight's Recommended Routine, I'm afraid that it seems that I have a bit of a ways to go before I'm even at the level of 'couch'. Ah well; I knew what I was getting into when I started this, and am picking up as much theory as I can to adapt pre-existing routines to my circumstances.
If it's worth saying, but not worth its own post, then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should start on Monday, and end on Sunday.
4. Unflag the two options "Notify me of new top level comments on this article" and "