Sleeping is a very important part of a human body functioning. To do various jobs properly, all body parts work jointly. Working whole long day makes body parts tiring and thus, to remove that tiresome, one necessarily needs to sleep at least for 8 hours daily at night. It is a minimum amount of sleeping that is necessary for everyone. Still, some studies have stated that sleeping amount can be varied according to age. Thus, as per age, infants who sleep for 16 hours is normal, teenagers require 9 hours for sleeping and for adults, this amount is 7-8 hours.
Last edited by Audrey
on Mon Aug 20, 2012 3:10 pm, edited 2 times in total.