7-8 hours is optimum
A pregnant woman should take adequate sleep. A nap after lunch is generally advised to her. She is advised to take minimum eight hours of sleep per day, normally.
You should sleep six hours in the morning.
A preteen should get around 9 hours of sleep.
They should have 8 or more hours of sleep in a day.
if you mean how many hours you should sleep in a year it would be 3,650 hours of sleep for a regular year not a leap year
At least 8 hours of sleep.
a cat shauld sleep 10-15 hours.
The Amount Of Sleep Your Eyes Need Each Day Is Twelve Hours For An Average Woman/Man.
At least 8 hours of sleep.
9 or more hours
8 hours