!!!!!Riddle3!!!!!

A magician was boasting one hari about how long he could hold his breathe under water.His record was six minutes.A kid that was listening said"thats nothing,I can stay under water for ten menit without using any equipment atau air pockets.The magician told him if he could do that, he would give him $10,000.The kid did it and won the money.Can anda figure out how?