I just finished W2D1. The last half of the run was work, and the last run of the set was really hard work, but I managed to get through it. Man oh man am I out of shape, but I'm less so than I was a month ago. Up and to the right.
The light-headedness is still there, but it's not nearly as bad as it was before. I think reducing the BP medication made a difference. I'm also noticing less dizziness when I stand up during the day. All in all, a net win. Hell, the mere fact that I am not dead from teh runningz is a great start.