Every 8 minutes, for 32 minutes (4 sets) for times:
20/15 Calories of Rowing
10 Dumbbell Thrusters
20 V-Ups
20/15 Calories of Assault Bike
Note times for each set, and then add all four times to get a total time. Your goal will be lowest total working time for the four sets. (Example, 3:35, 3:42, 3:58, 4:05 = 15:20)