Herbie Murray
Feeling groggy after waking up from an afternoon nap is a common phenomenon known as sleep inertia. Sleep inertia is a transient period of decreased cognitive performance during the transition from sleep to wakefulness. It is characterised by a groggy feeling, slower reaction times, poorer short-term memory, and slower speed of thinking, reasoning, remembering, and learning. While caffeine is often used to combat sleep inertia, it should be used sparingly, as it can remain in your system for more than 12 hours and disrupt your nighttime sleep. Instead, there are several natural ways to boost your energy levels in the afternoon, such as exercising, getting some natural light, or practising yoga.
How to Wake Up from an Afternoon Sleep
| Characteristics | Values |
|---|---|
| Avoid caffeine | Caffeine can last in your system for more than 12 hours, so it's best to avoid it in the afternoons. |
| Expose yourself to natural light | Your body takes its cues from light to know when to wake up and when to sleep. |
| Exercise | Working out increases your heart rate and body temperature, and releases endorphins, dopamine, and serotonin for a feel-good boost. |
| Avoid alcohol | Alcohol can wake you up in the night and suppresses the REM stage of sleep. |
| Avoid screens | Exposure to blue and green light from screens can make you feel more alert. |
| Establish a bedtime routine | Listening to soft music or reading a book can help you unwind and relax. |
| Avoid intense workouts close to bedtime | They can make it harder to fall asleep. |
| Get enough sleep | Lower your sleep debt and get in sync with your circadian rhythm. |
| Avoid sugar | Sugar gives you a quick, easy boost, but you'll pay for it later with low blood sugar and a big drop in energy. |
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What You'll Learn
Get some natural light to wake yourself up
Light plays a key role in regulating our sleep-wake cycle and can help ease you into waking up. Our bodies are stubbornly dependent on natural light to wake up, even though our lifestyles may be less reliant on it. Light is an important cue for your body's sleep cycle. The light you are exposed to during the day helps your body figure out when it's time to go to bed and when it's time to wake up.
Natural sunlight is the most potent form of light therapy, and getting exposure to sunlight in the morning can help you sleep at night by helping to reset your body's inner "sleep clock". Morning sunlight can also help you feel more alert during the day and help you feel sleepy in the evening, aiding an earlier bedtime.
You can get your dose of morning sunlight by leaving your curtains open to let light in as the sun rises. You could also try a sunrise alarm clock to mimic natural light and give you a similar effect to sunlight in the morning. If you can, go outside in the early morning sun for 30-45 minutes within an hour of waking up. Even on cloudy days, you'll still get the benefits of morning sunlight.
If you can't get outside, you can buy special lamps to do light therapy inside. Even opening the windows at home or in your car when the weather is nice can give you a little bit of sun.
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Exercise to boost your energy levels
Exercise is a great way to boost your energy levels, especially after an afternoon nap. Here are some exercises that can help you feel more energized:
Yoga:
Yoga is known for its calming and energy-boosting benefits. It involves slow movements and rhythmic breathing, which help open your spine, loosen tight chest muscles, and encourage deep breathing and open postures. This improves your physical energy and mental alertness. Yoga is also great for relieving stress and improving your overall well-being.
Pilates:
Similar to yoga, pilates focuses on proper breathing, strengthening the core muscles, and correcting posture. It enhances oxygenation throughout the body and targets exercises to relieve stress.
High-Intensity Interval Training (HIIT):
HIIT involves short bursts of intense exercise followed by brief periods of rest. It pushes your body to produce more lean muscle and burn fat. HIIT can increase your energy levels, boost your mood, and improve your overall fitness. However, proper form and guidance are crucial to avoid injuries.
Jogging:
Jogging is a simple and effective way to boost your energy. It provides physical and mental benefits, lowers fatigue, and improves concentration and alertness. As an aerobic exercise, it trains your heart, lungs, and muscles while releasing endorphins, which enhance your mood and sleep quality.
Swimming:
Swimming is a refreshing and relaxing low-impact exercise. It improves your strength, flexibility, and endurance while providing a full-body workout. Swimming is an excellent way to cool down and replenish your energy, especially on hot days.
Walking:
Walking is an underrated yet highly effective exercise to boost energy. Taking a 10-minute walk can be more energizing than a cup of coffee. It increases oxygen flow throughout your body and improves your fitness level and mental well-being. Climbing stairs or walking around your office can be a great way to take a break from a sedentary work routine.
In addition to these exercises, maintaining a consistent sleep schedule, exposing yourself to natural sunlight, and practicing deep breathing exercises can also help increase your energy levels and improve your overall sleep quality. Remember, regular exercise, even in short bouts, can have a positive impact on your energy and sleep.
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Avoid caffeine in the afternoon
While caffeine is a popular way to promote wakefulness, it is best avoided in the afternoon if you want to wake up from an afternoon sleep. Caffeine has a long half-life, with effects lasting for more than 12 hours in some cases. This means that even if you consume it in the afternoon, it can still be in your system at bedtime, disrupting your sleep.
Caffeine promotes wakefulness by blocking adenosine, a sleep-inducing chemical. However, when consumed in large amounts or close to bedtime, it can interfere with your natural sleep-wake cycle, making it challenging to get a good night's rest. This disruption can be more severe in people who only consume caffeine occasionally.
The adverse effects of caffeine on sleep include making it harder to fall asleep, reducing overall sleep duration, and decreasing sleep quality. Additionally, caffeine consumption can lead to side effects such as jitteriness, headaches, and nervousness. If you notice any of these side effects or insomnia, it is recommended to reduce your daily caffeine intake.
Instead of reaching for a caffeinated drink in the afternoon, try a short nap, known as a "cat nap," lasting 15 to 20 minutes. This can help reset your body and improve your alertness without entering the REM stage of sleep. Timing your nap is crucial to avoid negatively impacting your nighttime sleep. Aim to nap before 3 or 4 p.m., as your energy levels naturally dip in the afternoon.
Other alternatives to caffeine include moving or exercising, even if it's just a few minutes of walking or jumping jacks. Getting your blood flowing can increase alertness and oxygenation. Listening to upbeat, cheerful music can also boost your energy and enhance your mood, focus, and memory.
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Take a short nap to avoid sleep inertia
Sleep inertia is a term used to describe the groggy feeling you get when you wake up. It is a temporary disorientation and decline in performance and/or mood after awakening from sleep. People experiencing sleep inertia might have slower reaction times, poorer short-term memory, and slower speed of thinking, reasoning, remembering, and learning.
To avoid sleep inertia, it is recommended to take a short nap of between 10 and 20 minutes in the afternoon. This is most effective if you are not already sleep-deprived. If you are sleep-deprived, you may experience sleep inertia for longer than 30 minutes, according to researchers Tassi and Muzet.
If you are experiencing sleep inertia, it is recommended to allow time for it to dissipate before performing critical tasks. Exposure to light, especially dawn light, may help you feel more alert and better prepared to perform certain tasks.
Another strategy to avoid sleep inertia is to consume caffeine just before taking a short nap. Caffeine takes about 30 minutes to reach full effect, so when you wake up, you can experience the benefits of both the caffeine and the nap, resulting in less sleep inertia. This strategy is known as a "nappuccino" or "coffee-nap combo". However, it is recommended to use this tip sparingly, as caffeine can remain in your system for more than 12 hours and too much caffeine, especially later in the day, can make it harder to fall asleep.
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Get sunlight or use a light therapy lamp to feel awake
Sunlight and light therapy lamps are effective ways to wake up from an afternoon nap. Light therapy is a treatment for insomnia and other sleep disorders. It helps reset your body clock so you feel alert during the day and tired in the evening.
The therapy involves sitting one to two feet away from a light therapy box, which emits bright light. The light is artificial, but your body perceives it as natural sunlight. The light prompts your body to stop producing melatonin, the hormone that promotes sleep. Light therapy can be done at home, and you can read, cook, or use your computer while doing it. Light therapy boxes come in the form of floor lamps, desk lamps, alarm clocks, and other common household items.
If you don't want to use a light therapy box, you can try getting sunlight. Simply spend time outside, and the natural light will help reset your biological clock. Exercising outdoors will give you the benefits of sunlight, plus a boost of energy from the physical activity and fresh air.
However, keep in mind that light therapy may not work for everyone. It is always a good idea to consult a doctor or sleep specialist before starting light therapy. They can advise you on a safe treatment plan and recommend the appropriate light therapy products and intensity.
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Frequently asked questions
It is recommended that you nap for 15-30 minutes. This ensures that you wake up during a lighter stage of sleep, allowing you to feel alert and refreshed. If you nap for longer, you may experience "sleep inertia", which is a term used to describe a feeling of disorientation and a decline in mood and performance.
The best time to take an afternoon nap is between noon and 4 pm. Napping too late in the evening can push your bedtime later.
It is best to avoid napping in the same place that you sleep at night. Instead, opt for napping on a couch or in a chair.
Spending time in bright light or consuming caffeine can help to increase alertness and reduce feelings of tiredness after a nap.
