Question

What do you understand by sleep deficit? Why does the amount of sleep required to rejuvenate people vary from one person to another

Answer 1

According to Dr. Jeffrey Lipsitz, a Canadian expert on sleep disorders, on an average, a healthy adult requires just over eight hours of sleep at night. Joseph De Koninck, a renowned professor of psychology, is of the opinion that if one consistently gets less sleep than one needs, then "a sleep deficit accumulates." The amount of sleep required to rejuvenate people varies from one person to another as there is no fixed number of hours for which humans need to sleep.