How long will a person sleep after no sleep for 72 hours?
It all depends on the person. Some people still may not sleep.
Basically, the answer to your question, is it varies. You could
sleep for 3 hours, 7 hours, or even 12-20 hours. It depends on the
person.
If you are like most teens, If you are a teen, Then you can
sleep for about 14 hours and feel recovered for the most part. If
you are like me, You can sleep for 9 hours and feel perfect :D