One of my favorite conditioning workouts is a 12 round boxing drill I found in an issue of MA training. Give it a try: https://docs.google.com/document/d/1pNJzdXj_qk5X_3LmiPVpcDeduV7OtsfwHpnWcoCKQR4/edit?usp=sharing
It's a 36 minute workout when done completely. When I'm short on time or need a good warmup, I'll do 12 rounds of 1/2 time.
