cycling hills (two big hills) 1:20:00 [3] ahr:148 max:173 (injured)
spinning session at NIH.
two big hill-working periods. really nice but tough.
i tried to push really hard, not very often i hit 170 bpm while spinning.
10min at 113avg 12,6% zone 1
8min 129avg 10,1% zone 2
30min 148avg 37,2% zone 3
32min 164avg 40,2% zone 4