Sleep is one of the needs needed by the bodies of organisms, a state of relaxation that afflicts them when tired and after a long time of work or after a long time of waking up. During sleep, involuntary movements gradually decrease until they disappear completely during the period and involuntary movements such as the heart muscle – for example – remain. It is a common belief that sleep is a great dormant for people. It depends on the body’s activities, except for the activities that the body needs to survive. However, experiments and scientific progress have proven contrary to this common saying. The processes are complex in the human body as opposed to what was prevalent before that.
Sleep is characterized by a number of characteristics or criteria that distinguish it and known, including the disappearance of large movements of the human body, such as the movement of the body walking or the ability to talk or the ability to write, in addition to sleep is lying on the ground or on the bed at sleep except exceptions Sleep also limits the person’s ability to interact with the ocean. Sleep also limits the ability of the person to interact with sounds that are relatively low. Finally, the sleeper can wake up from sleep, and this is one of the things that distinguishes sleeping from others like coma or death. – God forbid – .
The number of hours a person needs to sleep is highly variable. Some may have hours of sleep less than 6 hours, others may have more than 9 hours, while others sleep 6-9 hours. For example enough to rest and make it active the next day, it is normal.
In order for sleep to be deep, healthy and enjoyable it should be noted that the atmosphere of the room should be appropriate in terms of temperature, noise intensity and lighting should be dim and there should be no type of things that cause tension in humans. The meals to be eaten should not be heavy meals, but should be snacks and before bedtime for about 3 hours, and should not take stimulants, nicotine or alcohol or anything else proved negative impact on sleep.