Teenagers, particularly after puberty, become more sensitive to light, tend to stay awake late, and may not wake up at conventional times, despite still needing the same amount of sleep as other teenagers.

“in Tina's right after puberty um there seems to be a I think that's when the teenagers become more sensitive sensitive to light uh and it's very it's well known that the teenage boys and girls they tend to stay awake late into the night and they can stay up to 12 mid past midnight although they can stay of that lid that doesn't mean that their sleep schedule is reduced their body still needs the same amount of sleep as other teenagers so that's why they are more likely not to wake up at 6 30 or 7 when we expect them to wake up and go to school”