Catching my breath

How could I've forgotten to mention that I've been training for a 1/2 marathon?! I'll be running in the Houston Marathon in January. I ran 9 miles for the first time ever last Saturday. I was walking like a penguin that night because I simply couldn't bend my knees but I felt like I'd really overcome a huge obstacle. Only 4 more miles to reach my goal. Feeling pretty good about that.