Explainer: The teenage body clock
Around puberty, a change in the body clock of adolescents and teens makes it hard for them to fall asleep as early as they used to
![waking up](https://www.snexplores.org/wp-content/uploads/2019/11/860_main_teenage_clock.png)
For teens and tweens, the changing timing of their inner biological clock means it can be hard to get a good night's sleep.
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