Suggest your child tries some mindfulness exercises to calm his anxious or active mind before sleep. If this is the case with your child, you might need to talk about it. Signs that your teenage child has sleep problems might include difficulties with: getting to sleep staying asleep getting out of bed in the morning. Ask your child to put his electronic devices in family rooms overnight. Feeling hungry or too full can make it harder to get to sleep. Why teenagers need sleep Your teenage child needs sleep to: maintain a healthy body keep her immune system working well maintain good mental health boost her energy levels, learning and concentration store things in her long-term memory. For each thought, your child could also add a possible solution. This helps the body feel ready for sleep at night. Worries, fears and anxiety If your child has worries that keep her awake at night, try talking about them together during the day.