Endurance - stations Workout

Every 3 minutes, for 36 minutes (3 rounds of each):
Station 1 – 25/15 Calories on assault bike
Station 2 – 50 Double-Unders + 10 burpees
Station 3 – Run 450 Meters
Station 4 – 20 sit ups + 10 renegade rows (35/25)