4 miles - 31:41
Great run.... very cold & joggy. I've read a lot lately about trying to build a substantial aerobic base by keeping the heart rate in certain zones. Even though I haven't received my heart rate monitor as of yet... todays pace felt nice & easy.
splits 8:02, 7:52, 7:53, 7:54.
![](http://i870.photobucket.com/albums/ab264/Derunzo_bucket/old-man-running-winter.jpg?t=1297351962)
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