Today wasn't even all that hard. In the past, the second half of the workout has found me leaning on the treadmill to hold myself up during the run -> walk transition. Today the last two were a little bit hard, but not all that much. My knee is only a tiny bit sore, not much above its usual baseline soreness. It really is a dramatic difference from just a few days ago.
I think I'll tack on a week 1 day 4 as a repeat of days 1-3 before moving up, though-- I don't quite feel ready for more yet.
However, there's something going on that I'm not happy about. During the cooldown walk at the end, I start feeling dizzy. This has been consistent across all of the runs I've done, not just this one. I usually eat a banana or something a bit before I start working out, and I always pour at least 16 ounces of water into myself, so I don't think it's lack of carbs or dehydration.
My theory is this: I'm taking Benicar for high blood pressure. I've suspected for a while that the dose I'm taking is too high-- the last time I had my blood pressure taken at the doctor's office, it was like 100 over 60. I often get a little bit dizzy when I stand up from a sitting position, and after I bend over. (Shush, all of you.) I've lost about 20 pounds since we upped the dose to its current level, and I suspect that combined with working out means that my blood pressure is naturally going down. At its worst, it was just barely across the line from high-normal to high, so it was never really obscenely bad.
I have a doctor's appointment in a couple of week. I'm tempted to call him tomorrow and ask if we can go back to a lower dosage ahead of that, so that when I go in we can see what the results are. Knowing him, he'll agree, but if not I'll just wait until I go in.