In modern life, we usually get robbed by our commitments and other demands in our life. We tends to sleep less and less. It maybe your worry that prevents your sleep, or you got insomnia. Psychology Today has a great info on how to get great sleep. It addresses couple of good info or concerns on getting little sleep. The article has full of information. This is quite interesting to note these most alerting and sleepiest time:

… Circadian rhythm guides the body through cycles of sleep and alertness. Ironically, it issues its strongest alerting force in a burst lasting from 6 p.m. to 8 p.m., perfect for dinner-party repartee (although you may not remember the bon mots — short-term memory is sharpest around 7 in the morning). After 8 p.m., alertness begins to fade, permitting us to doze off. This same system makes us sleepiest in the early morning, from 4 a.m. to 6 a.m. Stay up all night studying for an exam and circadian forces will make you drowsy near dawn. Stick it out for two more hours, though, and you’ll start picking up steam again. “You don’t need sleep to actually get alert,” Spielman points out…

How to Get Great Sleep – [Psychology Today]

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