The focus of this one is leg speed. Stay seated and wind out that cadence on each rep. We've got 3 sets of 20 micro bursts. Each rep is a short 10 seconds in length, set at 200%, and you want to be shooting for a cadence of 120+rpm. Soft pedal for 20 seconds between each. Follow this up with 45 minutes of endurance zone with 15 second bursts, seated or standing, your choice.