Core work: Partner assisted plank holds 45 second weighted plank hold (45/35) 15 second transition   8 rounds Partners alternate rounds. Use the transition time to remove weight, switch places, and then place weight on other partner.   Endurance: Bike 600m Rest 1:00 Bike 1000m Rest 2:00 Bike 2100m Rest 3:00 Bike 4200m  ...Read More