The very imperative thing that is essential for complete health care of all human being is the sleeping. I really don’t mean to sleep all time but sleep at time and take full sleep. The problem of headache, tiredness comes in your body when you don’t take proper might sleep because sleeping relaxes your mind and body and gives you fresh and glowing looks.Sleep follows a circadian rhythm that is regulated by many factors such as light fatigue and stress and the production of certain hormones such as adenosine and melatonin. During daytime, the presence of sunlight triggers production of hormones like cortisol and adenosine, which promote alertness and wakefulness. As recedes and darkness sets in, the eyes register the change in quality of light, transfer the message to the brain cortex and this stimulates production of melatonin, which promotes drowsiness and tiredness.

Interestingly, the optimal concentration of these hormones through the day and night varies significantly from person to person. This may explain why some people prefer to stay up and wake up late, while others prefer to sleep and wake early. Newborns usually spend 14-18 hours in a day sleeping, and this decreases to 8 hours a day in adulthood. The problems are incomplete sleep mostly found in woman resulting darkness around the eyes and sometimes it causes digestive problems also. Proper sleep is very important for your health. Via