NEED TO KNOW

Earlier this year, Croatian freediver Vitomir Maričić set a world record with a breath-hold of a mind-boggling 29 minutes and 3 seconds

He beat the previous world record by nearly five minutes — but the feat also left him with intestinal bleeding and a “massive headache” that lasted two days

“When I finished, I said to myself, ‘I’m not doing this again,' " he tells PEOPLE

A quick heads up to anyone contemplating holding their breath longer than Croatian freediver Vitomir Maričić : think twice.

“I seriously think it was one of the worst experiences in my life,” Maričić, a multisport athlete who recently set the world record for “the l ongest breath held voluntarily under water using oxygen ” with a breath-hold of a mind-boggling 29 minutes and 3 seconds, tells PEOPLE

See Full Page