Every minute, on the minute, for 21 minutes:
Minute 1 – 10/8 Calorie Assault Bike or row 15/10
Minute 2 – 5 Dumbbell Burpee Box Step-Up (20″, Light)
Minute 3 – 30 Double-Unders + 10 Pull-Ups

Immediately followed by…

Three rounds for time of:
10 Calorie Assault Bike
5 Dumbbell Burpee Box Step-Up
30 Double-Unders
10 Pull-Ups