What is healthy sleep?
(02.21.2008)

In general, healthy sleeping time is considered to be 7 to 9 hours per night.

As for the sleep needs of individuals, in general, young adults sleep for 7 to 9 hours per night, children plus 1 to 3 hours per night, and older adults minus 1 to 3 hours. These are the general sleeping time requirements for different age groups.

In general, good quality sleep can be defined as: falling asleep within half an hour of going to bed and not waking up during the whole night.

Good quality sleep requirements are: falling asleep within half an hour after going to bed and not waking up during the whole night or waking only once, rather than waking many times or waking too early; having no or few dreams, and no poly-dreams or nightmares; sleeping deeply, rather than lying in bed between sleeping and waking or being easily disturbed or awakened by the surroundings.

The optimal sleep time is between 10:00 PM and 6:00 AM.

Human optimal sleep time should be between 10:00 PM and 6:00 AM; older people may be 9:00 PM to 5:00 AM and children may be 8:00 PM to 6:00 AM.

Such sleep time is consistent with the natural rule of growth and reduction between yin and yang. If this rule is violated for a long time, the patient could be limited by the rule and suffer from insomnia.