Field Test - Where's the O2 ?

Today was the big day, my second Field Test! My big plans of doing it outside got shot down but that's only temporary. Once I have more practice and get off the blood thinners it's off the trainer and on the road full time for me; at least while the whether is good.

I was really happy with my results. I worked a lot harder this time but only because I was capable of working harder. If I had anything left to give I don't know where it was. When I got off the trainer each time I felt like I was trying suck every single molecule of oxygen out of the room and get it to my muscles before my legs collapsed.

I recovered real well. My stats on the second 8 minute interval were actually better than the first and both were far better than the last time I did a FT at the end of January.
Previous FT
Interval 1Elapsed Time : 00:08:00
Average BPM : 144
Maximum BPM : 158
Average Cadence : 94
Perceived Exertion: 8

Interval 2
Elapsed Time : 00:08:00
Average BPM : 141
Maximum BPM : 150
Average Cadence : 89
Perceived Exertion: 8

This FT
Interval 1
Elapsed Time : 00:08:00
Average BPM : 153
Maximum BPM : 173
Average Cadence : 95
Perceived Exertion: 9 - very difficult
Interval 2
Elapsed Time : 00:08:00
Average BPM : 158
Maximum BPM : 176
Average Cadence : 100
Perceived Exertion: 9 - very difficult