Max Breath Hold Test

Following the David Blaine protocol in the Four Hour Body:

Prev best breath hold = +/- 2 min

WOD:
Deep breathing = 1 sec inhale, 1 sec hold, 10 sec exhale with tongue behind teeth
Purging = 1 sec inhale, forced exhale (as if blowing a toy boat across a pond)
Semi-purge breaths = somewhere between deep breathing and purging

1.30 deep breathing 
1.15 purging
1.30 breath hold (no more)
3 semi-purge breaths
1.30 deep breathing
1.30 purging
2.30 breath hold (no more)
3 semi-purge breaths
2.00 deep breathing
1.45 purging
Max breath hold  =  4.02