Notes
1st 3 miles easy @ low hr:
1 - 8:37 (132)
2 - 8:18 (140)
3 - 8:06 (144)
then for last mile, went fast - was playing a game where I was trying to get to 4 miles before Sam got to 5 (he started before me)
4 - 6:35 (166) - great pace / hr (started out at 8.5mph, gradually upped pace to 9.5mph, finished it off at 10.0mph)
on fast treadmill...