How to Use Fitness Trackers for Sleep Improvement

By Brandon Peters, MD

If you have purchased a fitness tracker, like millions of others, you may wonder how to use the wearable device to improve your sleep. These sleep trackers may provide some valuable insight into an important of health and well-being. They can also be completely useless. What do these wearables measure? How accurate are these measurements? How do they differ from medical sleep studies? Importantly, how should the information collected be used to make changes to improve sleep and reduce insomnia? Let’s consider these important questions and discover how to use fitness trackers to sleep better.

What Sleep Metrics Do Wearable Fitness Trackers Measure?

There are many wearable devices available that can be used to track fitness goals and even sleep. Some of the most popular options include the FitBit and Apple Watch. There are also smartphone apps, smart beds, mattress pads, and stand-alone products that can track sleep metrics. What kind of information is collected?

Movement

Most devices are tracking movement. There are variations on actigraphy. This measures movement velocity and direction with an accelerometer. It may be assumed that stillness equates with sleep, and movement corresponds with activity.

Biometrics

Sophisticated devices may detect breathing patterns, heart rate, or oxygen levels. It may even be possible to measure electrical current conductivity within the skin. Sound may also be detected, sometimes via vibration, that may correspond with snoring.

Schedule

Timing is important to sleep quality. It may also be possible to input information about your bedtime, wake time, and even naps to help track sleep patterns over an extended period. This information is often collected via sleep logs and may help to identify circadian rhythm disorders.

Environmental Characteristics

Some devices may also be able to identify other environmental characteristics, such as lighting, temperature, and noise. These may be useful to support the other variables that are measured. If the room is dark, it is nighttime, and a person is not moving, it is more likely that they would be asleep.

How Accurate Are Sleep Trackers?

It is natural to wonder how accurate sleep trackers are in measuring the characteristics of sleep. If you were dieting and using a scale, you would certainly want to ensure the weight that it was reporting was close to reality, both true to the actual value (accuracy) and repeatable over time (precision).

Sleep is more than just lying still. Someone could lie perfectly still and a wearable may believe this inactivity corresponds to sleep. Similarly, movements may occur during sleep that do not necessarily correspond with complete wakefulness. Many awakenings will go unnoticed by an individual as it can take more than 5 minutes of wakefulness before a memory is generated.

It is possible that other measurements may help to strengthen the accuracy of these observations. Breathing becomes very regular in deep, slow-wave sleep. This may indicate a person has fallen asleep. Heart rate patterns, oxygen levels, and other biometric measurements may help improve accuracy.

Unfortunately, many sleep trackers are products that are designed for consumers without scientific validation. The measurements may not be either accurate or reproducible. Artifact may interfere with the measurements. Moreover, the collected information may not correspond to the gold standard measurements.

Comparing Information to Sleep Testing and Studies

When sleep is measured by a diagnostic polysomnogram in a sleep center, there are a number of important characteristics. These include the brain wave activity as measured by EEG, muscle tone, the movement of eyes, other body movements, and sometimes additional data. No fitness trackers are able to collect all of these data. The nightly sleep patterns they provide—showing light, deep, and even REM sleep—are not as accurate as the information gathered with formal sleep testing.

In fact, sleep trackers are perhaps closest to an actigraph, a small wristwatch-like device that measures movement to give a rough pattern of sleep and wakefulness. These data can be very difficult to interpret, even by expert researchers, and the messy signals may be inscrutable to an algorithm. What is a person to do? How can you use the data that is collected via a wearable sleep tracker to optimize your sleep?

How to Use Data to Improve Sleep

Though the data collected by wearables or other sleep trackers may be imperfect, it can still be useful. It may be important to take a bird’s eye view of the information that is collected. Consider these simple recommendations:

1. Trust your own experiences.

Before buying into the data collected by an imprecise, and possibly wholly inaccurate device, reflect on your own sense of how you are sleeping. Do you recall waking 30 times in the night? Do you remember dreaming, even though the device reported no dream sleep? Are you having difficulty explaining the sleep pattern it provides? If you feel like you are sleeping well, consider simply ignoring the sleep data your device may provide.

2. Use the information to reinforce good sleep habits.

It is helpful to keep a regular sleep-wake schedule. Get up at the same time every day, including weekends. Try to get 15 to 30 minutes of sunlight upon awakening. Go to bed at about the same time every day. Go to bed when you are feeling sleepy. Try to get at least 7 to 9 hours of sleep nightly, meeting your own sleep needs. Avoid naps when possible. If the sleep tracker helps to reinforce a regular schedule, it may be useful.

3. Don’t sweat the details.

There is evidence that data collected by sleep trackers can stress people out. It can add to anxiety and make insomnia worse. People become obsessed with the details, trying to explain every little blip in the data. If you find this is leading to obsessive behaviors for you, this could be a problem. Let it go. It may not be accurate anyway.

4. Corroborate the data with witness testimony.

There may be some inexplicable findings from your sleep tracker data. Perhaps some unremembered steps accumulated in the night. There may be frequent awakenings or restless sleep. The device may even report loud snoring. Try to verify these reports by asking a witness: consider questioning a bed partner. Learn if you sleepwalk, restlessly toss in the night, or rattle the windows with snoring. If there is a discrepancy, consider gathering more information before jumping to any conclusions.

5. If you are not sleeping well, get help.

Many people use sleep trackers because they are not sleeping well. They are hopeful that they may learn a little bit about why they are having difficulty sleeping. If the insomnia persists, this search can become desperate. Although some insight may be gleaned, more evaluation may be necessary. If you have poor sleep, especially if you have trouble sleeping through the night with frequent awakenings or experience daytime sleepiness, get evaluated by a board-certified sleep physician to sort out what might be contributing to your troubles.

Conclusion

It is fun to learn about ourselves. Sleep can be mysterious. Most of the night goes unremembered. It is natural to want to lift the curtain and glimpse a little about what occurs once our eyes close and we fall asleep. Be careful about positing too much faith into the accuracy of sleep trackers. The technology may improve with time, but these devices may be more novelties than serious scientific analyses. If you are struggling to sleep, get help from an expert.

Insomnia Treatment Option: Stimulus Control

Insomnia is a prevalent sleep disorder characterized by difficulty falling asleep, staying asleep, or waking up too early. This condition can significantly impact daily functioning and overall quality of life. Among various treatment options available for insomnia, stimulus control therapy (SCT) is a highly effective behavioral intervention designed to help individuals improve their sleep patterns. This article will explore the principles of stimulus control, its implementation, and its benefits in treating insomnia.

Understanding Stimulus Control

Stimulus control therapy is based on the idea that certain stimuli in a person’s environment can become associated with sleep difficulties. These stimuli can include the bed, the bedroom, and even the act of trying to sleep itself. When a person spends too much time awake in bed or associates their sleeping environment with anxiety or frustration, it can create a cycle of insomnia.

The goal of stimulus control therapy is to re-establish a healthy relationship with sleep by modifying these associations. SCT encourages individuals to create a conducive sleep environment and develop habits that signal to their bodies that it is time to sleep. This behavioral approach is often part of a broader cognitive-behavioral therapy for insomnia (CBT-I) framework, which is considered one of the most effective treatments for chronic insomnia.

Key Principles of Stimulus Control Therapy

The implementation of stimulus control therapy involves several key principles that focus on creating a strong association between the bed and sleep. These principles are as follows:

1. Use the Bed Only for Sleep and Intimacy: One of the foundational concepts of SCT is to reserve the bed for sleep and sexual activity only. Engaging in other activities, such as watching TV, working, or eating in bed, can weaken the association between the bed and sleep. By limiting activities in bed, individuals reinforce the idea that the bed is a place for sleep, thereby promoting relaxation when they lie down.

2. Establish a Consistent Sleep Schedule: Maintaining a regular sleep-wake schedule is essential for regulating the body's internal clock. SCT encourages individuals to go to bed and wake up at the same time every day, even on weekends. Consistency helps reinforce the body’s natural sleep-wake cycle, making it easier to fall asleep and wake up feeling refreshed.

3. Get Out of Bed if Unable to Sleep: If a person cannot fall asleep within about 20 minutes, they should get out of bed and engage in a quiet, relaxing activity in another room until they feel sleepy. This practice helps to prevent negative associations with the bed and reduces frustration. It allows the individual to return to bed only when they feel drowsy, reinforcing the connection between the bed and sleep.

4. Limit Naps: While napping can be beneficial, excessive daytime sleep can disrupt the natural sleep-wake cycle and make it more challenging to fall asleep at night. SCT suggests limiting naps to 20-30 minutes and avoiding them in the late afternoon or evening to maintain sleep pressure for nighttime.

5. Create a Relaxing Pre-Sleep Routine: Establishing a calming pre-sleep routine can signal to the body that it is time to wind down. Engaging in relaxing activities, such as reading, taking a warm bath, or practicing relaxation techniques, can help prepare the mind and body for sleep.

Implementation of Stimulus Control Therapy

Implementing stimulus control therapy requires commitment and consistency. Here are steps to help individuals effectively incorporate SCT into their routine:

1. Assess Sleep Patterns: Begin by keeping a sleep diary for one to two weeks to identify sleep patterns, bedtime routines, and factors that may be contributing to insomnia. This assessment will provide valuable insights into areas for improvement.

2. Set a Regular Sleep Schedule: Determine a target bedtime and wake-up time that allows for adequate sleep duration. Aim for 7-9 hours of sleep each night and be consistent with this schedule.

3. Create a Comfortable Sleep Environment: Ensure that the bedroom is conducive to sleep. This includes a comfortable mattress and pillows, optimal room temperature, and minimal noise and light disturbances. Consider using blackout curtains, earplugs, or white noise machines if needed.

4. Practice Relaxation Techniques: Incorporate relaxation techniques into the pre-sleep routine. Techniques such as deep breathing, progressive muscle relaxation, or meditation can help calm the mind and prepare the body for sleep.

5. Monitor Progress: After implementing stimulus control therapy, continue to keep a sleep diary to track improvements in sleep patterns and any remaining challenges. Adjust the approach as needed and remain patient, as behavioral changes may take time to yield results.

Benefits of Stimulus Control Therapy

Stimulus control therapy offers numerous benefits for individuals struggling with insomnia:

1. Improved Sleep Quality: By reinforcing healthy sleep associations, SCT can lead to more restful and uninterrupted sleep. Individuals often report feeling more refreshed and energized upon waking.

2. Reduction in Sleep Anxiety: By changing negative associations with sleep and the bedroom, individuals can experience reduced anxiety related to falling asleep. This newfound relaxation can further facilitate better sleep quality.

3. Behavioral Change: SCT promotes long-term behavioral changes that contribute to better sleep hygiene. These changes can help individuals develop healthier habits surrounding sleep, enhancing overall well-being.

4. Minimal Side Effects: Unlike pharmacological treatments for insomnia, stimulus control therapy is a non-invasive and natural approach. It does not come with the risk of dependency or adverse side effects commonly associated with sleep medications.

5. Empowerment and Self-Efficacy: SCT encourages individuals to take control of their sleep patterns and make conscious choices to promote better sleep. This empowerment can foster a greater sense of self-efficacy and improve overall mental health.

Conclusion

Stimulus control therapy is a valuable treatment option for individuals struggling with insomnia. By focusing on the environmental and behavioral factors that influence sleep, SCT can help individuals re-establish a healthy relationship with sleep and improve their overall sleep quality. With commitment, consistency, and a willingness to change, those suffering from insomnia can experience significant benefits from this behavioral approach. As part of a comprehensive treatment plan that may include cognitive-behavioral strategies and relaxation techniques, stimulus control therapy offers a pathway to restful nights and rejuvenated days. If insomnia persists, consulting a healthcare professional is advisable to explore additional treatment options tailored to individual needs.

This article was created using OpenAI’s ChatGPT on October 3, 2024 and it was personally reviewed and edited by Brandon Peters, M.D. to ensure its accuracy. This use of augmented intelligence in this way allows the creation of health information that can be trusted.