Intensive Endurance Ride

Today's Goal: 5 min @ 80% MHR (150bpm), 5 min @ 85% MHR(160bpm) (3.5x)

After the 1st 5 minutes, at 80% I was struggling, so I decided to ride another 5 min at 80%, then do 75% & 80% the rest of the way.

1: 142 Avg HR (75.5%)/ 152 Max HR
2: 150 (80%)/153
3: 141 (75%)/150
4: 148 (78.7%)/152
5: 142 (75.5%)/149
6: 149 (79.2%)/152
7: 144 (76.6%)/154

Mileage: 13.18
Time/Avg Sp/Max Sp: 50:01/15.9/21.9
Avg HR/Max HR: 135/153

Disappointed that I couldn't get up to the 80-85, but was successful with the modification.