What is the world record for not breathing?

accroding to the GWR (Guinness World Records) 2011

Karoline Mariechen Meyer (Brazil) held her breath underrwater for an astonishing 18 mins 32.59 secs at the Racer Academy swimming pool,Florianopolis,Brazi,on July 10,2009. A professional freediver Karoline trained for 4 months to try to break the record.Prior to the attempt, she inhaled oxygen for 24 minutes.

COPYED FROM GWR BOOK 2011 NOT MY OWN WordS.