This workout can be likened to a race with a hard start - a steady middle and a hard finish as we complete 2 blocks of efforts at 115% of FTP (Zone 5 - Vo2 Max), with a 15 minute block of Zone 3 (82% of FTP) in the middle.
We are going to complete all 6 of the Zone 5 efforts at a low cadence (60rpm) to simulate being stuck on a really steep section, where you are having to navigate around rocks - likely a fairly erratic pedalling style as your power output varies significantly from pedal stroke to pedal stroke!
You will notice the second block of efforts is a lot harder, as we will have the first block of efforts already in our legs - plus the 15 minute aerobic effort too. This will help prepare you for the end of a hard race!