AM- I decided to try running. Big mistake. I did 2 miles and my ribs hurt the whole time, plus the knots in my back from a week ago started acting up again. Then did 40 min bike. My ribs had improved to the point they only hurt when I sneezed, lifted something heavy, etc, but they hurt all day today due to the run. Stink. This is going to be a while. Biking doesn't use my lungs much while running does on every breath.