WOD 4/4/13

4 minute AMRAP of:
15 Thrusters (100 / 65 lbs)
15 Chest to bar Pull-ups
*4 minute bonus for every 90 reps (3 rounds) completed.

TIME BONUS:

If 90 reps (3 rounds) are completed in under 4 minutes, time extends to 8 minutes.
If 180 reps (6 rounds) are completed in under 8 minutes, time extends to 12 minutes.
If 270 reps (9 rounds) are completed in under 12 minutes, time extends to 16 minutes.
Etc.