Sleep duration may be determined not only by the lifestyle and energy consumption of a human, but his genetic data. Man, according to experts, should sleep at least 7-8 hours a day, this mode provides the optimal ratio of wakefulness and rest.
A number of genes determine the metabolism in the body. Someone digestion and energy production works better, some are worse. This parameter depends on genes and General health of the person.
The experts found two genome that determine how much a person needs to sleep. Data were established through the analysis of genetic information 50 thousand people.
Note that the genetic factor is only a part in shaping the health of a living organism. Key role lifestyle.