Notes
4x800 @3:53(7.73mph) w/ 400 jogs
Did it on the treadmill at the gym so I could control my pace and plus it is hard to figure out 1/2 and 1/4 miles on a 11 lap per mile track.
HR
Mile 1 10:20.24 148
Mile 2 8:24.15 161
Mile 3 8:22.88 171
Mile 4 9:07.24 165
Mile 5 10:17.56 167
Also did so streching afterwards.