Today I've tried to choose another tactic in first workout from competition at May, 18.

Workout is: 

21 burpees box jump / 9 sit-ups

15 burpees box jump / 15 sit-ups

9 burpees box jump / 21 sit-ups

Time: 6'49

On burpees box jump I've leapt off from another side of the box. Bad choice. :-/