a normal human should get from 6-8 hours of sleep, when excercising it is best if you get your full 8 hours, but don't sleep over 10 hours, it will cause brain sleep, which is basicly being tired, and lazy and feeling like your brain is numb.
2 hours
How many hours does it sleep
they sleep for 10 hours a day they sleep for 10 hours a day
they need about 6 hours of sleep
Elephants sleep for 2 hours
It depends on the situation.If you have been up all day, then exercising at night will prove to be ineffective.If you have been sleeping all day, and you woke up at night, then exercising at night is just as effective as exercising in the daytime.The reason being is because you need to get sleep, and without sleep, your body can't rest, and exercising won't prove to be effective without at least 8-12 hours of sleep.However, exercising at night is no different than exercising in the daytime if you have the right conditions.
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
They sleep upto 18 hours a day.
about 10 hours of sleep
you must get atleast 9 hours of sleep
I sleep about 7 to 9 hours a day
Its compulsary for a teen ager to sleep 8 hours..