Slow to fast

Warm run tonight. No knee pain for a week but I haven't done any steep hills which seem to trigger it.

6 x 400m on the Jordan HS track at lunch. 86, 91, 89, 91, 86, 86.

I couldn't get myself out of bed earlier enough to do more than 3 miles.  Late night with my 2 year old kid.

4 mile tempo on a late lunch break.  6:37, 6:51, 6:51, 6:55.  My heart rate was climbing more than normal and I don't think it was a problem with my monitor.  168, 178, 176, 183.  The last mile felt very difficult.  There was a little wind but not enough to explain a 183.