You can sleep as long as 8 hours in a row but without resting if you experience continuous apneas during the night that stop your breathing recurrently for a few moments.
Sleep is disturbed, even if the person does not know he or she has sleep apnea.
How our biological clock changes over time
Normally adults sleep 7 to 9 hours per night. After age 65 there can be changes, such as early awakenings. Let’s see what other changes occur in our internal clock
