Over Under Threshold booster. 2mins @ 85% followed by 2mins @ 105% for 10 mins.

10 minutes of Warm Up [ERG watts = 50% of FTP]
2 minutes of 85% [ERG watts = 85% of FTP]
2 minutes of 105% [ERG watts = 105% of FTP]
2 minutes of 85% [ERG watts = 85% of FTP]
2 minutes of 105% [ERG watts = 105% of FTP]
2 minutes of 85% [ERG watts = 85% of FTP]
5 minutes of Rest @ 50% [ERG watts = 50% of FTP]
2 minutes of 105% [ERG watts = 105% of FTP]
2 minutes of 85% [ERG watts = 85% of FTP]
2 minutes of 105% [ERG watts = 105% of FTP]
2 minutes of 85% [ERG watts = 85% of FTP]
2 minutes of 105% [ERG watts = 105% of FTP]
1 hour 30 minutes of Rest @ 50% [ERG watts = 50% of FTP]