Mile a day

Today I ran my mile (day 5) after teaching my classes and before going to karate. I was fresh but should have warmed up more, because I felt some soreness in my right hip for about the first quarter. It went away. Also, right from the very start I felt I was going slow.   
At about the third quarter I slowed down from discomfort with the cardio — that burn in the lungs.
I tried to speed up for the final fifty meters. My finish time was 9:13, my fastest yet. I was tired.