6x4

6 x 400M, 2:00 recoveries
1:32 @ 6:27 pace
1:40 @ 6:59 pace
1:30 @ 6:20 pace
1:43 @ 6:59 pace
1:43 @ 7:04 pace
1:53 @ 6:52 pace, .27 miles

Sunny, 76°, light winds. Ran shirtless, felt good.

Back tweakage yesterday seems mostly gone now.