Dr. Robert Banzett at the Harvard School of Public Health has been studying deep sea divers to find out.  Check out his work herea; http://www.harvardscience.harvard.edu/medicine-health/articles/holding-their-breath-breathless

There are several freedivers who say there is a vast difference between wanting the breath, which is what most of us feel, and the need to breath. The need to breath can be prolonged by slowing the heart rate. Thus some one can hold their breath for up to 19 minute as demonstrated by this man.

Partly it not a human breath record in the way you think your thinking of the "freediving record", the other responders have also mad this mistake.

Peter Colat's record is really an assisted record as for he breathed in PURE oxygen for 30 minutes. <- This is the big factor as it means his body is super oxygenated with far more oxygen in the bloodstream than for a normal person. From this you can see that his oxygen levels are increased, and his total inculding in his lungs is likely to at lest 2 times that of a normal person at sea level. (Would be interested in what the exact change is).

This gives a real air equivalent of 9 mins and 40.5 secs if his oxygen levels are rased to 2x normal.

The record for time underwater with normal air ("static apnea" record) is 11 minutes and 35 seconds and is held held by Stefan Missoud.

The answer is on the FEEDBACK page.

Several doses of 'Vitamin O Oxygen pills' that'll do the trick.

Jindivik

St Dogmaels

Cardigan

Apparently they breathe in a lot of air, but I think they're full of it.