Is a stew overnight, and some people will be exhausted, and some people did not think how tired. European scientific research staff up-to-date study confirmed that this difference in fact and a known gene-related PER3.

from Belgium and the United Kingdom study published in the 24's "Journal of Neurology," the report said, the study found people PER3 missing gene and the response after sleep, and this gene is divided into long version and short version of the two.

gene PER3 have a short version of the cognitive ability of people still stay up all night as usual after the show a lack of sleep to bear a certain degree of flexibility. Have a long version of the gene PER3 very sensitive people stay up all night, stay up all night after the apparent reduction in brain activity.

This time, researchers using brain imaging technology to scan, revealing the long version and short version of how it affects specific gene PER3 people stay up late response. The analysis found that genes have a short version of the people stay up all night PER3 after the completion of cognitive tasks, in addition to the normal activation of brain regions, but also the mobilization of additional brain structures in other regions to come to "help." And have a long version of the human brain PER3 gene is not so flexible.

researchers said that some special industry , such as health care workers, civil aviation pilots, truck drivers and so on, from time to time to be working at night. PER3 through genetic testing, you can identify what the crowd is not suitable for night work, which can be personalized and organization of work.