Summary
Things you should know:
- Sleep is important for all aspects of health.
- If we don't sleep well, there can be problems with our physical health, our mood, our thinking, and our risk increases for accidents. Improving sleep can improve all of this.
- During the teenager years, sleep needs and patterns can change a lot.
Why is sleep important?
Sleep is important as it plays a role in the proper functioning of ALL body systems. Although we don’t really know exactly the reason why we sleep, we know that we must sleep, or we can become very ill. Sleep is important for physical and mental health, and without it, all body systems that are involved in either physical or mental health do not function well.
What are the effects of getting a bad night’s sleep?
These can be divided into 4 main areas:
- physiological (body systems, like cardiovascular and endocrine systems and physical health),
- psychological (emotional and mental health),
- psychosocial (behaviour, peer relations, family relationships), and
- cognitive (learning, attention, problem solving; see Memory, Thinking & Sleep for more information)
Why do sleeping patterns change during the teenage years?
Two main reasons
- Social changes and pressures
Teenagers have a lot more going on in their lives (phone, TV, jobs, social activities, school, sports, homework, worry). Sleep is low on the priority list and is often given up for these other things, which can result in teenagers going to bed later. As a result, teenagers may also find it hard to get up in the morning because they fell asleep later and end up with less sleep.
- Circadian (sleep/wake) rhythm factors
During adolescence there is also a delay in the time when melatonin (one of our sleep hormones which makes us sleepy) is released from our brains. Therefore, teenagers are not tired until later in the evening. It is like the timing of their sleep shifts forward (see Body Clock for more information). So, as they are not ready to fall asleep until later - so they do things to stop being bored which can keep them even more awake (e.g. TV, phone). This is the second reason why teenagers may find it hard to get up in the morning for this reason, because their delayed melatonin makes them fall asleep later and they have not had enough sleep.
Is sleep just as important for teenagers as it is during other stages of life?
Short answer, absolutely. Research says that teenagers may actually need more sleep than younger and older people. But they usually don’t get it (see Teenage Sleep for more information).
How many hours of sleep per night should teenagers aim to get?
The current thoughts are that teenagers need between 8 to 10 hours sleep per night. Most teenagers across the world get between 7 to 8 hours sleep, so they may not be getting the sleep they need and be at risk of building up a ‘sleep debt’.
If people find it hard to get to sleep or to get enough sleep, what are some techniques they could try to improve this?
First of all, try and establish what is contributing to the problem. Is it:
- Psychological: For instance, are they worried, stressed, anxious or depressed? This can be addressed with help from a psychological professional, school counsellor or even a good friend. Relaxation exercises are also an excellent way of learning to relax the mind and the body, so sleep is easier.
- Physiological: For example, are they sick or in pain? If so, they will need to see a health professional.
- Environmental and behavioural: Is the room too dark or light or noisy or hot. Have they drunk too much coffee or watched too much TV or a mobile screen that can keep them awake? These environmental and behavioural issues with sleep can often be addressed by practicing healthy sleep habits or good "sleep hygiene". See our Sleep Hygiene: Good Sleep Habits fact sheet on this topic for further information.
Once you have determined what the problem is, it can be easier to choose a solution. However, if you are ever in doubt about what factors may be contributing to poor sleep, or the sleep problems are ongoing, then the best option is to see a doctor. A doctor can refer people to a sleep specialist or psychologist.
Further Resources:
Bruck, Dorothy (2006) Teenage sleep: Understanding and helping the sleep of 12 - 20 year olds. Wellness Promotion Unit, Victoria University, Melbourne, Australia.
The above is a free e-book at http://vuir.vu.edu.au/467/. It is written in a question-and-answer format.
This e-book is the only one published about the sleep of teenagers; written for parents, school Counsellors, youth health workers, high school teachers and teenagers. It brings together a lot of things about sleep. It includes behaviours that can happen during sleep and discusses problems like night fears, wet dreams, scary dreams, sleep deprivation, snoring, needing too much sleep, not being able to get to sleep or stay asleep. Sleepwalking, feelings of restless legs, being paralysed, midnight binge eating, the meaning of dreams and many other things are all covered. This e-book provides enough information to understand the key aspects of teenage sleep.
There is also a free sleep App through Black Dog Institute, Sleep Ninja, which has lots of evidence for good outcomes.