|Born||Trung Ha Village, Que Son District of Quang Nam Province|
|Known for||The claim of not sleeping for over 33 years|
Thai Ngoc or Hai Ngoc (born 1942) is a Vietnamese insomniac. According to Vietnamese news organization Thanh Nien, he is best known for his claim of being awake for 33 years. Thanh Nien also claimed that Ngoc acquired the ability to go without sleep after a bout of fever in 1973, but according to the Vietnam Investment Review, there was no apparent cause. At the time of the Thanh Nien report, Ngoc suffered from no apparent ill effect other than being unable to sleep. He was mentally sound and carried two 50 kg bags of pig feed down a 4km road every day.
In October 2006, however, Ngoc reported that he was beginning to feel "like a plant without water" due to the lack of sleep.
See also 
- Ngoc Thai: The Man Who Doesn’t Sleep, Leonardo Vintiñi, 16 Aug 2008, The Epoch Times
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