The Goal Of This Session: is to increase your anaerobic threshold
10-20 min WU
10-20x 1 min above FTP by 10% watts followed by 1 min below FTP by 10% watts. RPE will be almost 9 followed by 5 out of 10. Keep RPM high so gear accordingly.
NOTE: It is ok to take 5 minutes easy spin midpoint if needed - especially if you can't hold target power