Kristin Armstrong AC 19. Roller Coaster This ride is a hybrid style combining Strength Endurance (lower cadence) with Tempo. Todays session consists of 3 sets of 8 minutes. Each of the 8-minute sets will be broken in to 8 1-minute increments. The even minutes will be strength endurance efforts keeping RPM's between 60-70 and the odd minutes will be tempo efforts back to a cadence of 80-90RPM. After each set there will be 2:30 minutes of recovery. It will feel like a roller coaster of a ride! bike