Why don't teens get enough sleep?
One of the most common reasons is that their biological clock (AKA circadian rhythm) makes it hard to fall asleep before 11 pm and school starts too early to allow them to sleep until 8 am, which would allow for 9 hours.
In addition to their circadian rhythm, some of their habits and activities can interfere with a healthy bedtime.
- Screens are a big problem. The light interferes with our natural melatonin rising. I regularly ask teens (and parents) to limit screen use for at least an hour before bedtime, but most teens say that's impossible because they have to finish their homework at that time and they need their computer or tablet to do homework. If you can't turn off the screen, at least use a program that limits the blue light that prevents the rise of melatonin. I personally use f.lux. (It's free and works on PC, Mac, ipad, android, and Linux). I find that it really helps. (This is not a paid endorsement, just a personal statement.)
- Phones. On a similar note, phones distract kids from what they're doing, delaying falling asleep. It takes longer to finish homework when there are distractions from the phone. Kids often are tempted to check in one more time on all their social channels, which delays sleep time. And then friends who are still up will text to see who's up (or who they can wake up).
- Activities are too late. I'm not talking about kids just out and about on a school night. I'm talking about regularly scheduled activities that otherwise help build a well rounded person. It's not uncommon for activities to be scheduled to run until 9:30 or 10 on school nights for middle and high school aged kids. They get home and are hungry, need a shower, and are ramped up so not ready for sleep.
- Activities start too early. I know many kids who must be at school before school actually starts. Whether it's band practice, church study groups, sports, or taking a missed test before school, they all interfere with sleeping in, which is what teens need.
- School starts too early. Most school districts around the country start school well before the recommended 8:30 earliest start time. School districts that have initiated later start times have shown improved test scores, fewer absences and tardies, less depression, improved athletic performance, and better graduation rates. Unfortunately, those schools are still in the minority.
- Medical causes of sleep deprivation and fatigue can also occur. If you suspect any of these, you should schedule a visit with your doctor.
- Anxiety
- Restless leg syndrome
- Sleep apnea - pausing of breath, often associated with snoring
- Medications that affect sleep cycles
- Heartburn or acid reflux
- Hormone imbalances, such as thyroid problems
- Anemia, or low red blood cell counts
- Depression
- Nutrition: not eating enough, or eating foods that are not nutritious. If you eat foods that cause spikes in your blood sugar, as those sugars drop you feel fatigued.
- Infections
- Celiac disease
- Chronic pain conditions
- Chronic sleep deprivation - I know this is counter-intuitive, but being tired can make it harder to sleep.
What happens with too little sleep?
- Moodiness. We all associate the teen years with angst, so we can easily attribute a teen's moodiness to just being a teen. But being chronically tired can lead to emotional dysregulation. This will look like irritability, frustration and anger.
- School problems. It has been well established that getting proper amounts of sleep can help with focus and learning. When our teens fail to get enough sleep, they often report problems with attention, memory, decision making, reaction time, and creativity. It's no surprise that teens report problems paying attention to a lecture or trouble completing homework in a reasonable time with full accuracy. Grades can easily fall, which leads to anxiety and depression, which in turn leads to more moodiness and trouble sleeping.
- Sleep deprivation mimics ADHD. Whenever I see a teen who wants to be evaluated for ADHD because of new loss of focus, falling grades, problems with behavior, or similar issues, I always look at sleep. Most often they don't have ADHD if this is a new problem. They need more sleep, not a stimulant medication. You can't put a band aide on a broken bone. Fix the problem, not the symptoms! (The same goes for a teen with ADHD who thinks the medicine that's worked for years suddenly isn't sufficient. Unless the medicine recently changed, they need sleep.)
- Injuries. Teens with chronic sleep deprivation are more likely to be accidentally injured.
- Drowsy driving is comparable to drunk driving. Teens are at the highest risk for falling asleep at the wheel. Drowsy driving is the most likely to occur in the middle of the night (2-4 am), but also in mid-afternoon (3- 4pm) as teens drive home from school.
- Athletes are more likely to be injured while playing their sport, so it is in the best interest of the team to let players sleep.
- Risky behaviors. Teens with chronic sleep deprivation have been shown to participate in more risk taking behaviors, such as driving without a seatbelt, drinking alcohol, skipping the bike helmet and tobacco use.
Pros and Cons of later school start times for our economy
There are many temporary issues with changing school start times. Parents might have to find solutions to child care of younger kids if they rely on teens babysitting after school. New bus schedules need to be started. Sports programs will need to change practice times. After school job availabilities will change.
Despite these common arguments, economic analysis from the Brookings Institution shows that a one hour delay of school start times could lead to a $17,500 earnings gain for students, compared to a cost of $1,950 during the student's school days.
Another study that presumed all students start school at 8:30, with a year-by-year economic effect. The study did not take into account other potential benefits of later school start times, such as decreased depression and obesity rates. They found an average annual gain of about $9.3 billion due to fewer automotive accidents, improved graduation rates, and other factors.
What can teens do to get more zzzz's?
- Go to bed when tired at night. Fighting sleep initially will make it harder to go to sleep when you finally go to bed.
- Attempt to follow a regular sleep schedule. Going to bed and getting up at about the same time every day helps. While sleeping in on weekends can help repair a sleep deficit, it can make it harder to get to sleep Sunday night and getting sufficient sleep every night is better than just getting more sleep a few days/week. Try to sleep in no more than 2 hours past your school day wake up time.
- Follow the same routine each night at bedtime. Brush teeth, read a book or color, take a bath or shower -- do whatever helps you wind down and relax. Repeating this every night can help your brain get ready for bed.
- Nap to help make up missed sleep. A short 15-20 minute nap after school can help revitalize the brain to get homework done. Just don't sleep too long or it can interfere with bedtime.
- Turn off the screens an hour before bedtime. This includes tv, computer games, computer/tablet use for homework, and smartphones for socializing. Use night mode screen lighting and apps that dim the screen (like the f.lux app I mentioned above).
- Avoid caffeine in the later afternoon. The time it takes half of the caffeine to be removed from your body is 5-6 hours. Ideally teens would sleep and never drink caffeine, but I know that isn't reality. Any caffeine in the later afternoon can make it harder to fall to sleep. Don't forget "hidden" sources of caffeine, such as chocolate, energy bars, and workout supplements.
- One interesting concept that has scientific backing (but goes against the "no caffeine after 3 pm" rule) is the coffee nap. Basically, you drink coffee then quickly nap for 15-20 minutes. Sodas and teas don't work as well as coffee due to too much sugar and too little caffeine. The coffee nap has been shown to be more effective than either a nap or caffeine alone. Don't do this often -- use it at times you really need it. Don't do this too late in the day or the caffeine will inhibit your regular night's sleep.
- Skip the snooze button. Set your alarm for the last possible moment you can, which allows your body to get those extra minutes of sleep. If you need to get out of bed by 6:45, but set your alarm for 6:15 and hit snooze several times, you aren't sleeping those 30 minutes. Set your alarm for 6:45!
- Skip the late night studying. Studying too late is ineffective. When the brain's tired it won't learn as well and you will make mistakes more readily. It takes a lot longer to get anything done when you're tired. Go to bed and get up a little earlier to get the work finished if needed. Of course you should also look at your time management if this happens too often. Are you involved in too many activities? Do you work or volunteer too many hours? Did you waste too much time on tv, games, or socializing? Do you put off big projects until the last minute? Homework needs to take priority when you're more alert in the afternoon and evening. If you have problems with this, talk to parents and teachers about what you can do.
- If you lay awake for hours or wake frequently, try these techniques to help fall asleep:
- mindfulness (see my Mindfulness Pinterest page with many free apps)
- a sound machine
- listen to Weightless - music that's been shown to help initiate sleep
- coloring
- journaling
- If these fail, talk to your parents and doctor to help find a solution.
- Charge your phone in another room. Friends who decide to text in the middle of the night keep you from sleeping. Even phones on silent have blinking lights that can spark your curiosity. It's too tempting to look at your social media apps one more time.
- Don't use the excuse that you need your phone as an alarm. Alarm clocks are cheap. Get one and put your phone elsewhere!
- Use your bed for sleep only. Stop doing homework in bed. Stop watching YouTube and Netflix in bed. Train your brain that your bed is where you sleep.
- Exercise. Exercise helps our bodies sleep better, but it should ideally be earlier in the day. Too close to bedtime (which is common with athletes and dancers) wires us up.
- Get natural sunlight in the morning. This helps to set your circadian rhythm.
- Keep the bedroom cool and dark.
- Keep pets out of the bedroom. Your animals might love you and you love them, but if they keep you up, it's just not worth having them around at night.
- Nicotine and alcohol affect sleep. These should not be used by teens in an ideal world, but I know teens will not always follow the rules. Teens should know that if they are using nicotine or alcohol, their quality of sleep will be affected.
- Nicotine is a stimulant (like caffeine), which leads to more time sleeping lightly and less time in deep sleep. And yes, vaping and chewing lead to this problem too, since it's the nicotine that causes the problem.
- Alcohol reduces the time it takes to fall asleep but it increases sleep disturbances in the second half of the night, often leading to early wakening. Alcohol relaxes muscles, which can lead to sleep apnea (often noted as snoring). Sleep apnea does not allow the body to have restful sleep. Alcohol is also a diuretic, which might increase the need to wake to go to the bathroom during the night.
We all need to prioritize sleep: for our kids and for ourselves. Our bodies and minds will thank us.
Resources:
- Later school start times in the U.S.: An economic analysis
- Sleep Duration and Injury-Related Risk Behaviors Among High School Students — United States, 2007–2013
- School Start Times for Adolescents: (AAP) ADOLESCENT SLEEP WORKING GROUP, COMMITTEE ON ADOLESCENCE, AND COUNCIL ON SCHOOL HEALTH
- Melatonin for Children? A guide for parents by Dr. Craig Canapari
- I Just Want To Go To Sleep! How to Sleep Better (According to Science)I Just Want To Go To Sleep! How to Sleep Better (According to Science) by "Hey Sigmund"
- Start School Later, Inc.
- Back to Sleep Basics by Dr. Melissa Welby
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