How to take a short nap without feeling tired: 3 secrets to napping for 20 minutes to stay alert all day.

Properly taken naps can help you stay alert all day without feeling tired! This article shares three simple tips: choose the ideal time (10–20 minutes), try the "caffeine nap" trick, and relax by closing your eyes and resting. Apply these tips now to boost energy, improve concentration, and work more efficiently!

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Luba Lee, FNP-BC, MS Nội dung được xác thực bởi chuyên gia
Cách ngủ ngắn không mệt: 3 bí quyết ngủ 20 phút giúp tỉnh táo cả ngày-Tiptory

Do you often feel sluggish during the day, even after getting enough sleep at night? A proper nap can help you quickly recharge, improve concentration, and work more efficiently. However, simply lying down and dozing off doesn't guarantee alertness — if you nap incorrectly, you might wake up feeling even more tired and disoriented .

This article will guide you on how to take short naps without feeling tired , based on practical experience in healthcare and the body's natural circadian rhythm. Whether you're a student, an office worker, or a night shift worker, with just a few simple tips, you can turn short naps into a "vitamin boost" for the whole day.

How to take a short nap without getting tired

  • A 20-minute nap is the ideal length to help the body recover quickly, reduce drowsiness, and improve concentration.

  • You shouldn't sleep for more than 30 minutes , because once you enter the deep sleep stage, it's difficult to wake up immediately, easily leading to feelings of fatigue and dizziness upon waking.

  • Drinking a small cup of coffee before a nap can help you feel more alert after a short sleep. Caffeine takes about 20 minutes to take effect – just in time for you to wake up.

Short naps may seem simple, but if done correctly, you'll find yourself feeling refreshed, mentally alert, and significantly more productive throughout the day.

Tip 1: Choose the ideal spot for a short nap to stay alert.

Step 1: Choose the ideal place for a short nap.

  • Find a quiet and undisturbed space so that your nap can truly be restorative. Soft lighting, minimal noise, and a comfortable temperature will help you fall asleep more easily.

  • Napping at work: According to a survey by the National Sleep Foundation , about 30% of employees are allowed to nap at work, and some places even provide designated nap areas. If your workplace doesn't offer this, you can take a quick nap in your car — just park in a safe, well-ventilated spot and avoid attracting attention.

  • Taking a nap while driving: If you're driving and feel sleepy, find a legal rest area to take a short nap. Don't park on the side of the road. Remember to turn off the engine, engage the parking brake , and if it's nighttime, choose a well-lit, secluded spot, and lock your doors carefully before sleeping.

  • Napping at school: If permitted and time permits, the library is often the quietest place to take a quick nap between classes. Alternatively, you can also rest in your car if you have one — the privacy and quiet will help you recharge more easily.

Taking a short nap in the right place and in the right way can help you feel more alert, reduce stress, and significantly improve your concentration for the rest of the day.

Step 2: Choose a dark place to make it easier to fall asleep.

  • A dark environment helps you fall asleep faster because your body automatically releases melatonin – the hormone that promotes sleep – when the light decreases.

  • If you can't find a dark room or a quiet area , use an eye mask to block out the light. If that's not possible, wearing sunglasses can also help create a relaxing atmosphere and make it easier to fall asleep.

  • Keeping the lights to a minimum will help maximize the effectiveness of your nap , allowing you to wake up feeling refreshed and more focused.

Step 3: Maintain a comfortable temperature during short naps.

  • Temperature greatly affects sleep quality. The body finds it easiest to enter a state of rest when it is neither too hot nor too cold.

  • The ideal temperature for a nap is usually around 18°C ​​(65°F) – mildly cool, comfortable, and helps you relax faster.

  • If the place where you sleep is too cold , prepare a thin blanket or wear extra warm clothing to avoid getting cold while sleeping.

  • Conversely, if the temperature is too hot , you can turn on a fan or choose a well-ventilated area to improve air circulation.

  • Maintaining a stable body temperature helps make short naps more effective ; you'll wake up feeling comfortable, not irritable or tired.

Step 4: Listen to the guided relaxation exercises for napping.

  • Audio recordings or videos guiding you through short naps can help you relax your body and fall asleep faster. You can find them for free on music streaming sites, YouTube, or sleep-enhancing apps on your phone.

  • These guided meditations often incorporate nature sounds, gentle voices, and deep breathing techniques to help reduce stress and bring the body into a state of deep relaxation.

  • If you use your phone to listen to music , switch it to airplane mode before bed to avoid calls or messages interrupting you.

  • A proper nap plan will help you make the most of those 15–20 minutes of rest , waking up feeling lighter and more energized.

Step 5: Turn on some soft music to help you fall asleep more easily.

  • Soothing music helps relax the mind, reduce stress, and put the body in a state where it's easier to fall asleep faster. You can choose instrumental music, the sound of rain, ocean waves, or wind – these natural sounds are great for short naps.

  • If you find that music with a catchy melody distracts you , try white noise – a steady background sound that helps mask surrounding noise.

  • When taking a nap in your car , you can adjust the radio to somewhere between two frequencies to create natural white noise, which is both pleasant and helps prevent you from being startled by sudden noises.

  • Keep the volume at a comfortable level , not too loud, so that your body can truly relax and enjoy a short nap to the fullest.

Tip 2: How long should you sleep? The secret to choosing the right time.

Step 1: Determine the appropriate nap duration.

  • The ideal duration for a nap is about 10–20 minutes . This is enough time for the body to rest and recharge without falling into deep sleep.

  • If you nap for less than 10 minutes , it may still help reduce stress and increase alertness, but the restorative effect may be less pronounced.

  • Sleeping longer than 30 minutes can easily make you feel groggy and dizzy upon waking because your body enters the deep sleep stage.

  • Clearly define how much time you can rest and stick to the plan — set a gentle alarm, avoid sleeping in past your intended time to ensure your naps are as effective as possible.

Step 2: Take a short nap of 2–5 minutes when you feel too sleepy.

  • If you're too tired or sleepy to continue working , allow yourself a 2–5 minute nap —also known as a “nano-nap” .

  • Even though it's very short, this nap allows the brain to rest , reduces drowsiness, and temporarily improves concentration.

  • Nano-naps are not a substitute for real sleep, but they are a quick solution when you need to regain alertness to continue working or drive safely.

  • Just sit comfortably, close your eyes, take a few deep breaths , and you'll find yourself feeling more relaxed and at ease when you wake up.

Step 3: Take a short nap of 5–20 minutes to restore energy.

  • A nap lasting from 5 to 20 minutes , also known as a "mini-nap," is an ideal option for increasing alertness, improving stamina, and enhancing reflexes .

  • During this time, the body enters a state of light rest , making it easier to wake up without feeling groggy or tired.

  • Mini-nap is especially suitable for office workers, students, or those who do intellectual work , when you need to quickly "recharge" during the day without affecting your nighttime sleep.

  • Set a gentle alarm before bed , and choose a quiet, cool space for your mini-nap to be most effective.

Step 4: Take a short 20-minute nap – the ideal "power nap".

  • Sleeping for 20 minutes is considered the ideal duration for an effective nap , often referred to as a "power nap" .

  • This sleep not only helps you feel alert and energized , but also supports the brain in filtering out unnecessary information in short-term memory , helping to improve recall and motor reflexes .

  • During the first 20 minutes, the body goes through the first two stages of the sleep cycle , where electrical signals in the nervous system are consolidated, increasing the connectivity between nerve cells , helping the brain function faster and more accurately.

  • Power naps are especially useful when you need to remember a lot of information — for example, before an exam, a presentation, or a task requiring high concentration.

  • Choose a quiet, airy space , set your alarm 20 minutes early , and allow your body to completely relax – you'll wake up with a clear mind, ready for any challenge.

Step 5: Sleep for 50–90 minutes – a “complete restorative” sleep.

  • A nap lasting between 50 and 90 minutes is also known as the "Lazy Man's Nap," but in reality, it provides deep restorative effects for both the body and the brain .

  • During this time, you will go through a complete sleep cycle , including the REM (remote sleep) stage – the time when the body begins to repair itself and regenerate energy .

  • This type of sleep is especially helpful when you are severely sleep-deprived or have just had a sleepless night . It helps reduce stress, restore memory, improve mood, and boost work performance .

  • However, this should only be applied when you have enough rest time , because if you are woken up in the middle of deep sleep, you may feel dizzy and have a headache.

  • Choose a quiet place with a comfortable temperature , and set a gentle alarm for 90 minutes to ensure you wake up on schedule, refreshed and full of energy.

Step 6: Notes on naps longer than 30 minutes

  • Sleeping longer than 30 minutes can offer certain benefits, such as deeper energy recovery , but it also carries the risk of causing "sleep inertia" —a feeling of grogginess, fatigue, and disorientation upon waking.

  • This phenomenon occurs when you are awakened during a deep sleep phase , before your brain has had time to transition to a state of alertness.

  • If you only want a short nap to recharge , keep your sleep time to 10–20 minutes to avoid feeling groggy after waking up.

  • If you're very tired and need to sleep longer, take a full 90-minute nap to allow your body to complete the resting process, helping you wake up feeling more comfortable and refreshed.

Tip 3: Optimizing short naps: Sleep less, wake more.

Step 1: Turn off the device and reduce the noise for a short nap.

  • Before going to bed, turn off your phone and other potentially distracting devices like the TV, computer, or alarm clock. If you use your phone as an alarm clock , switch it to airplane mode to avoid messages, calls, or notifications interrupting your sleep.

  • If you're in a noisy environment or experience tinnitus , try wearing headphones and playing soft music, nature sounds, or white noise to help you relax.

  • If you don't have headphones, you can use earplugs to block out surrounding noise , helping you get a deeper and more restful sleep.

  • A quiet, undisturbed environment is key to falling asleep quickly, sleeping soundly, and waking up feeling refreshed .

Step 2: Let others know you're taking a short break.

  • If you take short naps at work , hang a "Do Not Disturb" sign outside your office or work area.

  • On the whiteboard, clearly state your return time — for example: “Taking a 15-minute break, returning at 2:30.” This helps colleagues understand that you are only taking a short break and not busy with personal matters.

  • This small step helps avoid unwanted disturbances while maintaining professionalism and respecting other people's time .

  • A short, quiet, uninterrupted nap will help you feel more alert, work more efficiently, and maintain a positive attitude throughout the day .

Step 3: Drink caffeine before a short nap.

  • It may sound counterintuitive, but drinking a little caffeine (like strong coffee or tea) right before a short nap can help you stay alert and work more efficiently after waking up.

  • The reason is that caffeine takes about 30–45 minutes to be absorbed through the digestive tract, so if you take a nap for about 20 minutes , the stimulating effects of caffeine will start right when you wake up .

  • Many studies call this a "caffeine nap," typically equivalent to 200mg of caffeine (a medium-sized cup of coffee) taken 20 minutes before bedtime – helping to reduce drowsiness, improve reflexes, and enhance concentration .

  • However, if it's almost evening or you're sensitive to caffeine , you should avoid this method , as it may affect your sleep at night .

  • Additionally, if you're cutting back or stopping caffeine , try taking short naps – they can still provide a similar level of alertness without the stimulant.

Step 4: Set your alarm properly before taking a nap.

  • Before going to bed, set your alarm for the exact amount of sleep you want to get , especially if you've just had coffee before a nap . This will help you relax without worrying about oversleeping.

  • Add in the time it takes you to fall asleep. For example, if you want to sleep for 20 minutes and it usually takes you about 5 minutes to fall asleep , set your alarm for 25 minutes . If you fall asleep easily, just adding 1–2 minutes should be enough.

  • If you're someone who often hits the snooze button and goes back to sleep, place your alarm out of reach —for example, at your bedside, on a desk, or away from your seat if you sleep in your car. This forces you to get up to turn it off , helping you wake up more quickly.

  • A gentle, well-timed alarm will help you wake up during your light sleep cycle , avoiding grogginess and keeping your mind alert for the rest of the day.

Step 5: Close your eyes and relax completely.

  • After drinking coffee (if you have any) or preparing your resting space , close your eyes and let your body relax naturally .

  • Focus on your breathing , inhaling deeply and exhaling slowly a few times to lower your heart rate and help your brain enter a state of rest more quickly.

  • Try letting go of your thoughts, don't try to control your sleep , just let your body regulate itself – you'll find it easier to fall into a short nap without feeling forced.

  • Even if only for a few minutes, this state of deep relaxation helps the body restore energy, reduce stress, and refresh the mind .

Step 6: Try the "4-7-8" technique to fall asleep faster.

  • If you have trouble falling asleep , try the 4-7-8 breathing exercise – a simple technique that helps relax the nervous system and calm the heart rate .

    • Exhale completely through your mouth.

    • Inhale through your nose for 4 seconds.

    • Hold your breath for 7 seconds.

    • Exhale slowly through your mouth for 8 seconds , possibly producing a soft "whoosh" sound.

    • Repeat 3–4 times . The entire exercise only takes about 1 minute but helps you relax and fall asleep faster .

  • If your mind is still busy, focus completely on your breath , letting go of thoughts as you would during meditation – this helps the brain calm down and quickly transition to a state of rest.

  • Another trick is to count down slowly from 100 to 0. If you forget which number you were at, just start again from 100 – this helps distract you from anxiety and gradually drift you off to sleep .

  • Additionally, you can use sleep aids or specialized music designed to induce relaxation and stimulate the brain into a sleep state – especially helpful for those who frequently suffer from insomnia or stress.

Step 7: Keep your eyes closed and let your body relax.

  • If you can't fall asleep right away , don't force yourself—just close your eyes and relax your whole body . Even if you can't sleep, this will still allow your brain and body to rest , reduce stress, and restore energy.

  • You can practice light meditation or focus on your breath to calm your mind and avoid wandering thoughts. This is an effective way to recharge your mental energy even without actual sleep.

  • Additionally, get your body used to taking short naps as a regular routine , for example , a nap after lunch each day . When maintained consistently, your body will "remember" this time frame , helping you fall asleep faster and more deeply.

  • Whether you're actually sleeping or just closing your eyes to relax, it's important to let your mind rest , helping you feel alert and energized for the rest of the day.

Step 8: Wake up as soon as the alarm rings.

  • When your alarm clock rings , sit up immediately ; don't try to sleep in. Even if you still feel sleepy, going back to sleep will disrupt your circadian rhythm and may leave you feeling more tired when you wake up a second time .

  • If you still feel sluggish, do some light exercise to wake up your body : do a few push-ups, jump in place, or stretch to increase your heart rate and improve blood circulation .

  • Afterward, wash your face with cool water to dispel drowsiness, then step into a place with natural light (like a window or outdoors). Light helps the brain receive wakefulness signals , regulates the hormone melatonin, and helps you wake up more quickly .

  • A few minutes of activity and exposure to light after waking up will help you regain energy, clear your mind , and be ready to return to work more effectively.

Important tips for effective and uninterrupted short naps.

  • Avoid taking naps too late in the day. Sleeping until late afternoon disrupts your circadian rhythm , making it difficult to fall asleep at night and increasing the risk of sleep deprivation the following morning.

  • Wake up on time, even if you feel very relaxed. Forcing yourself to get up after your nap time is over helps maintain a stable sleep-wake cycle . Sleeping too long will make your body sluggish, reduce productivity , and disrupt your natural circadian rhythm.

  • Maintain a consistent nap time each day —for example, a nap after lunch . When done regularly, your body will "learn" to feel sleepy and wake up at the right times.

  • If you feel sleepy during the day , don't try to stay awake ; take a short nap of 10-20 minutes to regain your energy.

  • Find the ideal sleep length for your body. Everyone has a different threshold – some people are most alert after 20 minutes , others find 30 minutes more comfortable. Experiment to discover your "golden range."

  • When you need to wake up quickly, choose a short nap instead of drinking coffee , or try the "caffeine nap" method – drink coffee and then sleep for 20 minutes. However, don't overuse caffeine , as too much can lead to dependence, sleep disturbances, and long-term fatigue .

  • If you have trouble falling asleep, you can listen to relaxing music or use a sleep aid device , which helps the brain go through deep rest phases for about 20 minutes.

  • Some people find that crying softly before bed helps release emotions and makes it easier to fall asleep – this is a natural reaction, and there's nothing wrong with it.

  • Don't mistake short naps for laziness. Many successful people, such as Leonardo da Vinci, Albert Einstein, and Thomas Edison, considered power naps their "secret weapon" for staying sharp and creative.

  • However, remember that naps cannot replace a full night's sleep . If you are sleep-deprived, you need to catch up on sleep to allow your body to truly recover.

  • Finally, limit your intake of caffeinated beverages (coffee, tea, energy drinks, soda), as caffeine is a strong stimulant . Excessive consumption can disrupt your natural sleep cycle and may lead to mild addiction if used regularly.

Short naps are only truly effective when you sleep at the right time, for the right duration, and in the right way . By listening to your body, you'll stay alert, productive, and full of energy all day long.

References

  1. https://fortune.com/2011/08/18/why-companies-are-cozying-up-to-napping-at-work/
  2. https://www.sleepfoundation.org/sleep-hygiene/napping
  3. http://io9.com/the-science-behind-power-naps-and-why-theyre-so-damne-1401366016
  4. http://www.medicaldaily.com/life-hack-sleep-4-7-8-breathing-exercise-will-supposedly-put-you-sleep-just-60-332122
  5. http://www.magicwandcoach.com/count-to-sleep.htm

Translated by Leigh Kennedy Ly .

Luba_Lee-Tiptory
Luba Lee, FNP-BC, MS Family nurse

Luba Lee is a Certified Family Nurse in Tennessee with over 10 years of clinical experience. She holds PALS, ACLS, Emergency, and Intensive Care certifications and earned a Master of Nursing degree from the University of Tennessee in 2006.

Updated on Ngày 16 tháng 07 năm 2026 (GMT +7)

3 comments

Mỗi mùa chạy deadline là mình áp dụng chiêu “caffeine nap”: uống cà phê rồi ngủ ngắn 20 phút. Nghe kỳ kỳ nhưng hiệu quả bất ngờ – tỉnh dậy là đầu óc sáng như đèn LED, gõ máy tính như thần nhập. Mấy đứa trong team giờ cũng nghiện chiêu này, gọi vui là “ngủ kiểu dân chơi hệ tỉnh táo”! Ai chưa thử thì nên thử một lần cho biết cảm giác “ngủ mà như không ngủ”!

Lê Phú HưngNov 9, 2025

Ngày xưa cứ nghĩ càng ngủ trưa lâu càng khỏe, ai ngờ ngủ 1 tiếng giữa ngày xong tỉnh dậy đầu óc quay cuồng, mắt lờ đờ như vừa đi xuyên không. Sau đọc bài mới biết: chỉ cần 20 phút là đủ để tỉnh táo mà không bị “quán tính giấc ngủ”. Giờ cứ đúng 20 phút là mình bật dậy như lò xo, đồng nghiệp còn tưởng mình uống Red Bull!

Tùng NguyễnNov 8, 2025

Hồi mới đi làm, mình hay tranh thủ ngủ ngắn trong xe giờ nghỉ trưa. Ai ngờ lần đầu quên kéo kính, vừa chợp mắt thì nắng chiếu thẳng mặt, tỉnh luôn! Sau rút kinh nghiệm: đỗ xe chỗ mát, kéo rèm, bật nhạc nhẹ, đặt báo thức đúng 20 phút – tỉnh dậy như được reset não, làm việc tới chiều vẫn sung sức. Giờ thì mình gọi đó là “power nap đỉnh cao”!

Quang PhúcNov 8, 2025

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Expert Q&A

In-depth analysis and practical advice from leading experts.

The ideal duration for a short nap is about 10–20 minutes. This is just enough time for the body to recover energy without falling into deep sleep – which can easily cause grogginess upon waking. If you only have a few minutes, a 2–5 minute "nano-nap" can also help reduce drowsiness temporarily. If you're extremely tired, you can take a full 90-minute nap to feel more alert, but remember to avoid sleeping too long during the day to prevent affecting your nighttime sleep.

It might sound counterintuitive, but drinking a small cup of coffee before a short nap is actually a very effective trick! Caffeine takes about 20-30 minutes to take effect, so if you doze off during that time, when you wake up, the coffee will have already started to "activate" your alertness. This is called a "caffeine nap"—helping you feel more alert and react faster after resting. However, if you are sensitive to caffeine or it's almost evening, you should avoid it to prevent affecting your nighttime sleep.

Absolutely! Even if you can't sleep, closing your eyes and relaxing your body can still give your brain some rest. Focus on your breathing, inhaling deeply and exhaling slowly to relax. You can also listen to soft music or nature sounds to help you unwind. A few minutes of rest like this can help reduce stress, refresh your mind, and regain alertness to continue working more effectively.

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