I mean, you can very easily google and see there is scientific consensus that teenagers require more than 8hrs of sleep, with 9 or 10 being optimal although there will always be outliers.
the 7-8 you reference is for adults 25yrs+. As a general rule humans require less sleep the older they get.
the 7-8 you reference is for adults 25yrs+. As a general rule humans require less sleep the older they get.