Sleep is a fundamental and natural physiological need. This is a decline of physical and mental stress, in the absence of full consciousness. Its length and quality is absolutely essential part of regeneration of the organism, affecting its proper function. The average length of sleep should range between 7 to 8.5 hours, but it is very individual.
For optimal sleep can be considered one that brings plenty of rest and rehabilitation of physical and mental strength. If one wakes up fresh and full of energy the next day, he can honestly say that a good night's sleep.
Time to sleep is controlled by alternating day and night (the circadian clock), the day can be considered as active and passive night as part of the regular cycle. These biological clocks are controlled by the hypothalamus.


Sign in:-
-
-
-
Follow us:-
-
-
-