March Challenge15: Bodyrock.tv Extreme Workout Challenge 2

The last time I did this, I only managed to complete 2 rounds in 17:59.

Original workout: Bodyrock.tv

3 Rounds:
300 High Knees Skipping
20 burpees
40 backward lunge & kick up (alt sides)

I am proud to say I completed 3 rounds in 22:51