Back on the treadmill

Literally.  I got my sorry ass up this morning and got on the treadmill.  I'm starting slow, but at least I am starting (finally).  I am worried about my knees.  Nine sprains and lots of abuse during the formative years has taken its toll.  I would eventually like to be running again.  Who knows what will happen?  I just know I am tired of being tired.  Wish me luck!