Disappointing!

After 2 days off I was looking forward to one of my home-brew turbo sessions called Shorter Harder.

Overview (based on a FTP of 306W)

Warm-up: 5 mins at 200W
8 mins at 270W
7 at 280W
6 at 290W then 3 mins rest interval (RI)
5 at 300W then 2.5 min RI
4 at 310W then 2 min RI
3 at 320W then 1.5 min RI
2 at 330W then 1 min RI
1 at 340W then cool-down

All was well until the 3 mins at 320W when I no longer wanted to continue. At the time, with sweat dripping off my nose and a lovely dinner waiting to be cooked, it seemed natural to stop there and then. However, afterwards I realised that I should have carried on no matter how uncomfortable it was; at 300-340W I wasn't going to hurt myself and I'm not going to get stronger quitting. So that's it, NO MORE QUITTING!

I last completed this session on 23 Oct to exactly the same power and felt quite good afterwards (according to the notes I took at the time) so I have no idea why tonight was so different. Here's the plot. I was going to have a pic of a pansy after my weak performance, but the plot is probably more useful. Black line = power. Red line = HR.