Intervals 23:50 [5] 5.15 km (4:38 / km)
ahr:159 max:181
1st km
3:26 HHR: 174
1st rest
1:01 LHR: 118
2nd km
3:30 HHR: 179
2nd Rest
1:09 LHR: 120
3rd km
3:36 HHR 177
3rd Rest
1:10 LHR 120
4th km
3:43 HHR 178
4th Rest
1:04 LHR 120
5th km
3:38 HHR 180
4th Rest
1:30 LHR 120
Felt very sluggish and tired in my legs for this session. Struggled to keep up the speed. :(