This is focused on a high aerobic power with a 'VO2 Pyramid' which lasts a total of 7min but includes some short rest periods within each pyramid. This will see you have a high Vo2 by the end of each pyramid set as we try to raise your maximal aerobic 'roof'. The twist is that we have a short 7min block of sub threshold effort between each pyramid, an excellent session to push your limits.