Sleep is one of the most important factors for physical and mental health. However, many people experience sleep inertia, or a groggy feeling upon waking, even after a good night’s sleep. With sleep inertia, you might experience reduced cognitive function and productivity. In this fast-paced world, optimizing your sleep is more important than ever.
Understanding Sleep Inertia
Sleep inertia is the feeling of grogginess and cognitive impairment that you experience after waking up. It occurs because your brain is still in a sleep-like state, leading to slow reaction time and poor coordination. This is due to waking up during deep sleep stages, such as slow-wave sleep and REM. Sleep inertia can be exacerbated by factors such as irregular sleeping habits, insufficient sleep duration and sleep disorders.
Some of the consequences of sleep inertia include reduced alertness, slower reaction times, memory recall difficulty, and poor performance and decision-making.
The Science Behind Sleep Inertia
There are plenty of reasons why you might experience sleep inertia. These include neurobiological factors such as adenosine levels and disruptions in circadian rhythm. The duration of your sleep can also significantly affect your cognitive performance after waking up.
Strategies to Combat Sleep Inertia
Here are some of the ways you can prevent sleep inertia from affecting your entire day.
Optimize Sleep Hygiene
A consistent sleep schedule is important not only for preventing sleep inertia but also for your overall health. Regular sleep and wake cycles help in regulating the body’s internal clock. As a result, you wake up less groggy and tired. Your sleep environment should be dark, quiet and cool for deeper and more restorative sleep. Some of the things that can help to set a bedtime body temperature include a quiet fan, breathable blankets, air conditioner and lightweight pajamas. These factors are especially important in the summer.
Limit disruptions and distractions such as using your phone. In fact, phone screens can be correlated with shorter sleep duration. The light from phone screens can feel like daylight and make it more difficult to fall asleep. They might also cause eye strain and fatigue the next day. As such, it’s best to keep your phone away from your bed.
Pre-emptive Measures
Incorporate relaxing wind down activities such as reading a book, meditating, stretching and taking a warm bath. They help signal to your brain that daytime is over and that you can finally rest and relax. When your body and brain are prepared for sleep, it is faster and easier for you to fall asleep instead of shuffling around in bed physically tired but mentally wired. It also becomes easier for you to wake up naturally and energized the next day. Journaling and brain dumps are also an excellent wind down activity because it helps clear the clutter from your mind and prepare you for the next day.
Morning Strategies
Upon waking up, it’s best to get exposure from a bright light, preferably natural light. The flood of light signals the body to wake up, reducing the groggy feeling. Make sure to wake up right after your alarm. Hitting the snooze can cause you to doze off and exacerbate the groggy feeling later.
Your alarm also plays an important role in preventing sleep inertia. Many can be loud and jarring. Instead of those, use alarm clock apps that monitor your vitals so you can wake up in a light stage of sleep. You can also use a sunrise alarm clock that produces bright light gradually with gentle sounds, mimicking sunrise.
After getting out of bed, make sure to incorporate some form of movement. This can be as simple as gentle exercise, light stretching or walking to increase alertness. Besides preventing sleep inertia, regular exercise can help you fall asleep more easily at night.
You can also consume caffeine to shorten the length of your sleep inertia. Just make sure to avoid caffeine late in the day so you can fall asleep on a consistent schedule later. Additionally, keep hydrated and drink plenty of water to prevent dehydration and fatigue. Lastly, splashing cold water on your face or taking cold showers can give you a much-needed boost of wakefulness.
Things to Avoid
It’s best to avoid drinking alcohol and smoking when you experience sleep inertia. These can negatively impact your sleep quality and make it harder for you to fall asleep. Naps can be good way to add in extra hours of sleep during the day. However, they should be shorter than 30 minutes as it might be difficult to fall asleep later in the night with longer naps.
The Role of Nutrition
Your food plays a key role in your overall health, including sleep. For example, magnesium-rich food enhances sleep quality. You can get magnesium from your diet via leafy greens such as spinach and kale, nuts, avocado and whole grains. These foods also reduce cortisol levels. Other nutrients necessary for quality sleep and which food they can be found in include:
Tryptophan: Turkey, soybeans, pumpkin seeds, oats
Zinc: Shellfish, Nuts, eggs
Selenium: Brazil nuts, whole grains, fish
Vitamin B6 and B12: Eggs, legumes, whole grains, meat
Omega‐3 fatty acids: Salmon, tuna, chia seeds, flax seeds
Polyphenols and flavonoids: Kiwi, cocoa, berries, cherries, green tea
Melatonin: Walnuts, tomatoes, grapes
A protein-rich breakfast also helps to satiate you and avoid morning crashes. Make sure to avoid highly-processed food, greasy meals and refined sugars as they can drastically increase your blood sugar levels and lead to a sluggish drop later in the day.
Take Control of Your Mornings Back
Sleep is important in maintaining your physical and mental health. To avoid sleep inertia, make sure to build a strong sleep hygiene routine, exercise regularly, expose yourself to natural light and eat nutritious food. Some of the most helpful foods for combatting sleep inertia include fatty fish, leafy greens, avocado and nuts and seeds. Through these efforts, you can wake up well-rested so you can tackle the day with energy.