I Felt Good!

Ran Quality run #2 today, 2 miles of easy jogging, 5 minutes at a "hard" pace, 7:13 second miles, 5 minutes of easy jogging. I repeated this 3 times. I felt so good I ran another 3 easy miles after this for a total of 7.3 miles. Well, my knee is hurting right now, I think I need to go and see a specialist and get diagnosed and given the proper remedy.