After a layoff due to a lower back problem, I finally had to try to run today. I started out with walking, with some pain and stiffness that gradually lessened. Finally I started jogging, and ran 2 miles total.
Easy 5 miles, mostly pavement. I had to walk a lot to loosen up my lower back. Finally started to run slowly, and by one mile there was no pain or stiffness. Legs actually sore from easy 2 miles yesterday. Ridiculous.