Moment 112 - Want To Sleep Better? Listen To This: Matthew Walker
This episode provides actionable sleep hygiene tips to improve sleep quantity and quality. It covers maintaining regularity, optimizing bedroom environment, and the significant negative impacts of alcohol, caffeine, and screen use on sleep.
Deep Dive Analysis
10 Topic Outline
Introduction to Sleep Hygiene Tips
Tip 1: The Importance of Sleep Regularity
Tip 2: Creating Darkness in the Bedroom
Tip 3: Optimal Bedroom Temperature for Sleep
Tip 4: What to Do When You Can't Sleep
Tip 5: Alcohol's Detrimental Effects on Sleep
Impact of Blue Light from Screens on Sleep
Melatonin's Role as the Hormone of Darkness
Devices as Attention Capture and Sleep Procrastination
A Rule for Using Technology in the Bedroom
3 Key Concepts
Sleep Hygiene
Sleep hygiene refers to a set of practices and habits that are necessary to have good quality sleep on a regular basis. These include maintaining a consistent sleep schedule, ensuring a dark and cool bedroom environment, and avoiding substances like alcohol before bed.
Melatonin
Melatonin is often called the 'hormone of darkness' or 'vampire hormone' because it signals to your brain that it's nighttime. Your brain needs this signal to understand when it is time to fall asleep, and its release is suppressed by light, especially blue light from screens.
Sleep Procrastination
Sleep procrastination occurs when you are perfectly sleepy and could fall asleep, but you delay going to bed by engaging with stimulating activities, often on electronic devices. This leads to an hour or more of lost sleep, creating a sleep deficit.
5 Questions Answered
Modern society hinders sleep through irregular sleep schedules, insufficient darkness at night, bedrooms that are too warm, alcohol consumption, and exposure to stimulating content and blue light from electronic devices before bed.
No, alcohol is not a sleep aid; it acts as a sedative but fragments sleep, causing numerous brief awakenings that disrupt sleep quality and significantly blocks rapid eye movement (REM) sleep.
These features are only partly effective because while they reduce blue light, the primary issue is often the stimulating and attention-capturing nature of the content on these devices, which activates the brain and makes falling asleep difficult.
Using an iPad for an hour before bed delays sleep onset, reduces total sleep time, decreases the amount and delays the release of melatonin, and reduces REM sleep. These disruptive patterns can persist for several days even after stopping screen use.
Melatonin is the 'hormone of darkness' that signals to the brain that it's nighttime, which is essential for the brain to understand when it's time to fall asleep. Light exposure, particularly blue light, inhibits its release, confusing the brain into thinking it's still daytime.
10 Actionable Insights
1. Maintain Consistent Sleep Schedule
Go to bed and wake up at the same time every day, including weekends, as your brain thrives on regularity for better sleep quantity and quality.
2. Create Evening Darkness
In the last hour before bed, dim or switch off half to three-quarters of the lights in your home to signal to your brain that it’s time for sleep and promote sleepiness.
3. Optimize Bedroom Temperature
Aim for a bedroom temperature of 18-18.5 degrees Celsius (65-68 degrees Fahrenheit) to facilitate a necessary drop in core body temperature for falling and staying asleep.
4. Avoid Alcohol Before Bed
Do not use alcohol as a sleep aid because it acts as a sedative that fragments sleep, causes numerous brief awakenings, and blocks critical REM sleep.
5. Limit Evening Caffeine
Avoid consuming coffee or other caffeinated beverages in the evening, as they can interfere with your ability to fall asleep and disrupt sleep quality.
6. Remove Phone from Bedroom
Keep your phone out of the bedroom and don’t look at it until morning to prevent stimulation and blue light exposure that disrupt sleep and melatonin release.
7. Limit Screen Time Before Bed
Avoid using screens like iPads for at least an hour before bed, as blue light delays melatonin release, reduces total sleep, and decreases REM sleep, with effects lasting for days.
8. Address Device Stimulation
Recognize that devices are designed to capture attention and stimulate your brain, leading to sleep procrastination and making it difficult to fall asleep due to cerebral cortex activation.
9. Get Out of Bed If Awake
If you find yourself lying awake in bed for more than 30 minutes, get up and do something different or meditate until you feel sleepy again, rather than staying in bed awake.
10. Use Phone Standing Up (If Necessary)
If you absolutely must bring your phone into the bedroom, only use it while standing up; once you sit or lie down on the bed, put the phone away to limit screen time.
5 Key Quotes
Your brain expects regularity, it thrives best under conditions of regularity.
Matthew Walker
Alcohol is not a sleep aid. Many people use it as a sleep aid, it is not your friend.
Matthew Walker
Melatonin... signals to your brain that it's nighttime, that it's darkness and so your brain needs the signal of melatonin for it to understand when is it dark.
Matthew Walker
The principal function of these devices is that they are attention capture devices.
Matthew Walker
If you really must take your phone into your bedroom, you can only use it standing up.
Michael Grandner (quoted by Matthew Walker)
2 Protocols
5 Sleep Hygiene Tips for Deeper Sleep
Matthew Walker- Go to bed at the same time and wake up at the same time every day, regardless of whether it's a weekday or weekend, as your brain thrives on regularity.
- In the last hour before bed, dim down or switch off half to three-quarters of the lights in your home to signal darkness to your brain.
- Aim for a bedroom temperature of about 18-18.5 degrees Celsius (65-68 degrees Fahrenheit) to facilitate the necessary drop in core body temperature.
- If you find yourself lying awake in bed for too long, get up and do something different or meditate instead of staying in bed.
- Avoid alcohol, as it is not a sleep aid; it sedates but fragments sleep and blocks REM sleep, leading to poor quality rest.
Technology Use Rule in the Bedroom
Michael Grandner (as described by Matthew Walker)- If you must bring your phone into the bedroom, only use it while standing up.
- As soon as you feel the urge to sit down or your backside touches the bed, immediately put the phone away.