Melatonin, a hormone critical to inducing sleep, is released two hours later at night in a teenager’s brain than it is in an adult’s. It also stays in the teenager’s system longer, and this is why it’s so hard to wake your high schooler up in the morning. Adults, on the other hand, have almost no melatonin in their system when they wake up and therefore don’t have the same groggy feeling.
— Mar 09, 2026 02:23AM
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