How to express your thanks in numerous different languages, and how to reply when someone thanks you.
Report Abuse. Namaste Ramesh. Lions sleep 20 hours every day. Male lions sleep up to 20 hours per day (with one eye open so to speak.) While the females are the hunters the male lions don't and their job is to protect the pride (their harem so to speak).
Given this much, we now know why we sleep. The average adult sleeps 7 to 8.6 hours a day. Children sleep more than adults; they spent about 10 hours a day sleeping. Newborns, however, may sleep for nearly two-thirds of their day. There is an age-related difference in average time spent sleeping. As a person ages, they require less sleep. The elderly only spent around 6.5 hours a day sleeping.