There’s a reason we tend to feel sleepy around the same time each night — and why, if we don’t set an alarm, we tend to wake up at the same time in the mornings. As long as we’re not pulling all-nighters or traveling across several time zones, our bodies tend to want to follow consistent sleep patterns, which is key for getting the high-quality sleep we need.
Our sleep schedules do vary from person to person, depending in large part on the environmental cues we give our bodies — when we set our alarms, when we are most active during the day, when we eat, and when we let ourselves hit the hay.
And because our sleep schedules depend on the signals we send our bodies (“It’s not time to go to bed yet — there’s another episode of [insert whatever show you’re currently bingeing here] queued up!”), that means we can send our bodies signals to adjust our sleep schedules, too. Just because you’re in a rut of going to bed at 2 a.m. doesn’t mean you can’t change that!
If you do want to get your sleep schedule back on track, you’re going to need to reset your body clock. Our body clocks regulate our bodies’ circadian rhythms, the patterns of physical, mental, and behavioral changes, including sleep patterns, regulated by body temperature, hormone secretion, and external factors like light and darkness.
Our body’s master clock is located in a part of the brain’s hypothalamus called the suprachiasmatic nucleus, which receives light information from the retina in the eye and sends the information to other parts of the brain, including the gland that releases the sleep-signaling hormone melatonin, says Rochelle Zozula, PhD, a sleep specialist and owner of Sleep Services International in Bridgewater, New Jersey. “Light suppresses that production of melatonin, which is directly involved in sleep initiation,” she says.
That means the light signals you send your brain, whether from sunlight or a glowing computer and cell phone screens, are some of the key factors that can either keep your sleep schedule on track, get it back on track, or throw it off significantly.
Additionally, things like traveling across time zones or staying up a lot later than usual can throw off sleep patterns, because we’re asking our bodies to sleep at different times than our bodies’ internal clocks are telling us to sleep.
Similarly, people who do rotating shift work, such as overnight workers or truck drivers — who aren't able to stick to a consistent sleep schedule — tend to have difficulty with sleep because their body clocks run on a different schedule than they’re allowing their bodies to follow.
It’s problematic, not only because having a misaligned body clock and sleep schedule on a day-to-day basis can result in poor sleep quality (and you not getting the sleep you need), but over time, that misalignment has been found to be linked to several chronic health problems, such as sleep disorders, obesity, diabetes, depression, bipolar disorder, and seasonal affective disorder, among others.
Having a severely misaligned body clock and sleep schedule is itself considered a sleep disorder. About 1 percent of adults have advanced sleep phase disorder, meaning they go to bed early, from 6 p.m. to 9 p.m., and wake up early, between 1 a.m. and 5 a.m.
Others, especially younger people, may experience the opposite: delayed sleep phase syndrome (DSPS), or going to bed extremely late and waking up late. It’s estimated to affect as many as 15 percent of teenagers.
“DSPS is a circadian rhythm disorder associated with an inability to fall asleep at the individual’s desired time [typically several hours later] and an inability to wake up at the desired time,” says Dr. Zozula. “Due to the individual’s daytime obligations, a person with DSPS may be forced to wake up earlier and go against their natural circadian tendency.” This can lead to chronic sleep deprivation, poor performance, and depression.
For people with a condition like DSPS, getting back on track depends on how long the pattern has been entrenched. “We tell people to wait one or two months,” says Pelayo. “If people have had poor sleep for years, they’re surprised when they start getting better. And when you’re surprised about your sleep getting better, that wakes you up, because you’re not sure it’s going to keep working. It takes maybe two months for the novelty of sleeping well to wear off.”
Changing your sleep schedule (particularly if you have delayed sleep phase syndrome) isn’t easy, but with the proper discipline it can be done. “Don’t get upset with yourself, because it just makes the problem worse,” Pelayo says. “Know that sleep will come eventually.”
Our sleep schedules do vary from person to person, depending in large part on the environmental cues we give our bodies — when we set our alarms, when we are most active during the day, when we eat, and when we let ourselves hit the hay.
And because our sleep schedules depend on the signals we send our bodies (“It’s not time to go to bed yet — there’s another episode of [insert whatever show you’re currently bingeing here] queued up!”), that means we can send our bodies signals to adjust our sleep schedules, too. Just because you’re in a rut of going to bed at 2 a.m. doesn’t mean you can’t change that!
If you do want to get your sleep schedule back on track, you’re going to need to reset your body clock. Our body clocks regulate our bodies’ circadian rhythms, the patterns of physical, mental, and behavioral changes, including sleep patterns, regulated by body temperature, hormone secretion, and external factors like light and darkness.
Our body’s master clock is located in a part of the brain’s hypothalamus called the suprachiasmatic nucleus, which receives light information from the retina in the eye and sends the information to other parts of the brain, including the gland that releases the sleep-signaling hormone melatonin, says Rochelle Zozula, PhD, a sleep specialist and owner of Sleep Services International in Bridgewater, New Jersey. “Light suppresses that production of melatonin, which is directly involved in sleep initiation,” she says.
That means the light signals you send your brain, whether from sunlight or a glowing computer and cell phone screens, are some of the key factors that can either keep your sleep schedule on track, get it back on track, or throw it off significantly.
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Because our body clocks, which control our sleep schedules, are sensitive to light, things like how much sunlight we’re exposed to throughout the day and what types of light we’re exposed to at night affect our sleep schedules.
Additionally, things like traveling across time zones or staying up a lot later than usual can throw off sleep patterns, because we’re asking our bodies to sleep at different times than our bodies’ internal clocks are telling us to sleep.
Similarly, people who do rotating shift work, such as overnight workers or truck drivers — who aren't able to stick to a consistent sleep schedule — tend to have difficulty with sleep because their body clocks run on a different schedule than they’re allowing their bodies to follow.
It’s problematic, not only because having a misaligned body clock and sleep schedule on a day-to-day basis can result in poor sleep quality (and you not getting the sleep you need), but over time, that misalignment has been found to be linked to several chronic health problems, such as sleep disorders, obesity, diabetes, depression, bipolar disorder, and seasonal affective disorder, among others.
Having a severely misaligned body clock and sleep schedule is itself considered a sleep disorder. About 1 percent of adults have advanced sleep phase disorder, meaning they go to bed early, from 6 p.m. to 9 p.m., and wake up early, between 1 a.m. and 5 a.m.
Others, especially younger people, may experience the opposite: delayed sleep phase syndrome (DSPS), or going to bed extremely late and waking up late. It’s estimated to affect as many as 15 percent of teenagers.
“DSPS is a circadian rhythm disorder associated with an inability to fall asleep at the individual’s desired time [typically several hours later] and an inability to wake up at the desired time,” says Dr. Zozula. “Due to the individual’s daytime obligations, a person with DSPS may be forced to wake up earlier and go against their natural circadian tendency.” This can lead to chronic sleep deprivation, poor performance, and depression.
Tips for Resetting Your Sleep Schedule
If you have fallen into a sleep schedule that’s not working for you, because you’re having trouble getting up in the morning, staying up later than you want, or whatever the case, what can you do? Try taking these steps to get your sleep patterns on the track that works for you:- Adjust your bedtime, but be patient. If you’re aiming to go to sleep earlier, try slowly scaling back your bedtime until you are at the desired hour. Often you may need help from a physician with this. “As a general rule, it’s easier to push away sleep than to advance sleep,” says Rafael Pelayo, MD, clinical professor at the Stanford Sleep Disorders Clinic and the Stanford University School of Medicine in California. “So you could stay up later an hour at a time, but going to bed earlier is hard to do.” To get to sleep earlier, Dr. Pelayo recommends going slowly and in small increments, adjusting no more than 15 minutes earlier every two or three days.
- Do not nap, even if you feel tired. Napping can interfere with going to sleep at night. Pelayo recommends scheduling exercise when you feel like napping. “The exercise will chase away the sleepiness. Then you can save up that drive to sleep for later,” he says.
- Do not sleep in, and get up at the same time each day. Being consistent is important in maintaining a functioning sleep schedule. Get a good alarm clock and don’t hit snooze. “The clock in your head needs instructions,” says Pelayo. The brain expects that people more or less wake up at the same time every day — and either doing so or not serves up those instructions to the brain. “The idea of weekends or travel across time zones is foreign to how the brain works. That’s what throws it off,” he says. Once you’re in a good pattern when it comes to bed and wake times, stick to it as best you can. Even one late night can disrupt the progress you’ve made, Pelayo says. Predictability is key.
- Avoid exposure to light before sleep. Research shows that exposure to evening light can shift your body clock to a later schedule.
Remember: Light sends signals to the brain that it’s time to be awake. If you’re trying to go to sleep earlier, avoid bright and outdoor light close to bedtime (that includes light from cell phone, laptop, and TV screens) and keep your surroundings dim at night. - Avoid exercising too close to bedtime. While staying active during the day generally promotes good sleep, a workout too close to bedtime can help keep the brain and body on (by upping heart rate and body temperature) and make it tougher to sleep.
Some research suggests that evening workouts can improve sleep, as long as you aren’t exercising within an hour before bedtime, but it depends somewhat on the individual and how your body responds to exercise.
If you are going to exercise later in the day, consider choosing low- or moderate-intensity workouts, which will be less stimulating; and be sure to incorporate a cool down at the end of your workout. - Watch what you eat close to bedtime. Try to avoid snacks packed with sugar, which could cause a sugar spike, as well as caffeine and nicotine, both of which are stimulants. Spicy, acidic foods may also cause heartburn or acid reflux.
If you’re feeling peckish, you can reach for a light snack like tart cherries or kiwis, both of which have been shown to promote sleep. - Set the mood and create a relaxing bedtime routine. Take a warm bath and play some relaxing music, or do something else you find relaxing. Make sure that your bed is comfortable, the room is dark, and the temperature is not too warm. “You want to look forward to sleeping. Going to sleep should not be a chore,” adds Pelayo.
- Use sunlight to your advantage.Exposure to sunlight (or other bright light) when you wake up helps tell your body that it's time to be awake and helps set your circadian rhythm for the whole day, so that your body indeed feels sleepy when it's time to go to bed.
Exposure to natural sunlight is ideal, but if there's no sun or you can't get outside, there are special indoor lights to help. - Schedule a visit with your healthcare provider. If your sleep schedule is interfering with job and other responsibilities, if the above strategies don’t work, or if you’re struggling with sleep in any way, tell your doctor.
Sleep affects our functioning and our health now, as well as our long-term health. Chronically not getting good sleep can do a lot of damage, and there are healthcare providers out there who can help. If your primary care provider does not have expertise in sleep, they can refer you to a sleep specialist who can help.
For people with a condition like DSPS, getting back on track depends on how long the pattern has been entrenched. “We tell people to wait one or two months,” says Pelayo. “If people have had poor sleep for years, they’re surprised when they start getting better. And when you’re surprised about your sleep getting better, that wakes you up, because you’re not sure it’s going to keep working. It takes maybe two months for the novelty of sleeping well to wear off.”
Changing your sleep schedule (particularly if you have delayed sleep phase syndrome) isn’t easy, but with the proper discipline it can be done. “Don’t get upset with yourself, because it just makes the problem worse,” Pelayo says. “Know that sleep will come eventually.”