
Physiological need for sleep varies according to age. Sleeps 18-20 hours a day for a new born baby. A little boy sleep 12-14 hours a day. An adult person per day varies between 7-9 hours sleep time, at least 5-6 hours of sleep per day is required in the elderly. Human sleep and would have as much as the young. An adult person must be at least 5-6 hours sleep. Normal sleep 7-9 hours. In some cases,...