During sleep, teenage brains go through similar developmental changes as growing toddlers. Their sleep cycle is altering, so they tend to get sleepy later than children or adults.
Good rest is still important, and teenagers need between nine and 10 hours of sleep each night.
Signs your teenager may not be getting enough sleep include:
You may also get a clue from poor sleep practices. These include eating large meals just before bed, or looking at TV or phone screens until late at night.
If you get in the habit of chatting about how rested they feel, your child may also tell you when they feel overly tired.