If you have ever felt drowsy in the middle of the day and wondered whether a quick rest would help, you are not alone. Many of my patients here in Brentwood ask me this exact question: are naps healthy, and can they actually improve how you feel? I am Dr. Farshid Ariz, DMD, a periodontist at TMJ & Sleep Centre SFV, and while my specialty focuses on TMJ disorders and sleep-related concerns, the science of napping ties directly into sleep health, daytime alertness, and overall well-being. Let me walk you through what the research says — and how smart napping habits can support a healthier lifestyle.
Why People Nap — And Why the Question Matters
Modern life is demanding. Between work, family, and daily obligations, many people in Brentwood and surrounding communities like Encino and Woodland Hills simply do not get enough nighttime sleep. When sleep falls short, your body looks for ways to make up the deficit. That is where napping comes in.
But napping is not just about catching up on lost sleep. Research shows that even people who sleep well at night can benefit from a brief daytime rest. The real question is not just “are naps good for you” but how to nap in a way that supports your health rather than disrupting it.
The Science Behind Healthy Napping
A growing body of evidence supports the idea that napping is healthy when done correctly. According to a study published in the journal Heart in 2019, individuals who napped once or twice per week had a 48% lower risk of cardiovascular events such as heart attack and stroke compared to those who did not nap at all. That is a meaningful number, and it suggests that occasional rest during the day can have real protective effects on the heart.
Another important data point comes from NASA’s well-known nap study. NASA researchers found that a 26-minute nap improved pilot performance by 34% and alertness by 54%. These findings are striking because they show how even a short rest can dramatically sharpen focus and reaction time. For anyone who drives, works with their hands, or makes important decisions during the day, this kind of boost matters.
When we look at napping through the lens of sleep health — something I discuss frequently with patients dealing with sleep apnea and related conditions — the benefits become even more apparent. A well-timed nap can reduce stress hormones, lower blood pressure, and enhance memory consolidation.
How Long Should a Healthy Nap Last?
Not all naps are created equal. The length of your nap plays a major role in how refreshed or groggy you feel afterward. Here is a simple guide to help you choose the right nap length:
- 10 to 20 minutes: This is often called a “power nap.” It keeps you in light sleep, so you wake up alert and energized. This is the sweet spot for most people.
- 30 minutes: At this length, you may enter deeper sleep stages. Waking up from deep sleep can cause sleep inertia — that heavy, foggy feeling. Try to avoid this duration if possible.
- 60 minutes: A one-hour nap includes slow-wave sleep, which helps with memory and learning. You may feel groggy at first but sharper later.
- 90 minutes: This covers a full sleep cycle, including REM sleep. You are more likely to wake up feeling refreshed because the cycle completes naturally.
For most adults, I recommend sticking to the 10-to-20-minute range. It gives you the benefits of rest without interfering with your nighttime sleep routine.
When Is the Best Time to Nap?
Timing is everything. The best window for a healthy nap falls between 1:00 PM and 3:00 PM. This aligns with a natural dip in your circadian rhythm — that internal clock that regulates when you feel sleepy and when you feel awake. Many cultures around the world have recognized this pattern for centuries and built afternoon rest into their daily routines.
Napping too late in the afternoon or evening can make it harder to fall asleep at night. If you are already dealing with sleep difficulties — whether from stress, a TMJ disorder, or a breathing-related sleep issue — a late nap can compound the problem. Keeping your nap early in the afternoon helps protect the quality of your nighttime sleep.
Are Naps Healthy for Everyone?
While napping offers clear benefits for many people, it is important to consider your individual health situation. For most healthy adults, a short daytime nap is perfectly beneficial. However, if you find yourself needing to nap every single day just to function, that could signal an underlying issue.
Excessive daytime sleepiness is one of the hallmark symptoms of sleep apnea and TMJ-related sleep disturbances. When your airway is partially blocked during sleep — or when jaw tension keeps you from reaching deep, restorative stages — you may feel exhausted no matter how many hours you spend in bed. In these cases, napping is a temporary fix, not a solution.
If you live in Brentwood, Encino, or anywhere in the San Fernando Valley and you are struggling with persistent fatigue, I encourage you to explore whether a sleep or TMJ concern might be involved. Addressing the root cause is always more effective than relying on daytime rest alone.
Napping and Mental Health Benefits
Beyond physical health, napping supports emotional well-being too. A brief rest in the middle of the day can help regulate your mood, reduce feelings of irritability, and improve your ability to handle stress. When you are well-rested, you are more patient, more creative, and better equipped to navigate challenges.
Studies from the Sleep Foundation confirm that napping can enhance emotional processing and boost positive feelings. For anyone juggling a busy schedule — whether you are a professional, a parent, or a student — those mental health benefits are just as valuable as the physical ones.
Tips for Making Your Naps Work for You
If you want to get the most out of your daytime rest, here are some practical tips I share with my patients:
- Set an alarm. It is easy to oversleep when you are tired. An alarm ensures you wake up at the right time and avoid sleep inertia.
- Choose a quiet, dark space. Reducing light and noise signals your brain that it is time to rest, even briefly.
- Stay consistent. If you nap regularly, try to do it at the same time each day. Consistency helps your body adjust.
- Avoid caffeine before napping. If you drink coffee right before lying down, the caffeine may kick in just as you drift off, making rest difficult.
- Keep it short. Remember, 10 to 20 minutes is ideal. You do not need a long nap to feel the benefits.
Napping Is a Tool — Use It Wisely
Think of napping as one tool in your overall sleep health toolkit. It works best when combined with good nighttime sleep habits, regular physical activity, and attention to any underlying health conditions. A short, well-timed nap can sharpen your mind, lift your mood, and even protect your heart. When done right, napping is absolutely a healthy choice.
At the same time, pay attention to what your body is telling you. If daytime sleepiness is constant, it may be worth having a conversation with a sleep health professional. Here in Brentwood, our team is always happy to help patients understand the connection between sleep quality, TMJ function, and overall vitality.
Frequently Asked Questions
Are naps healthy for adults who already sleep well at night?
Yes, even adults who get a full night of sleep can benefit from a short nap. A 10-to-20-minute rest in the early afternoon can boost alertness, improve mood, and enhance cognitive performance. As long as it does not interfere with your nighttime sleep schedule, a brief nap is a healthy habit.
How long should I nap to feel refreshed without being groggy?
The ideal nap length is between 10 and 20 minutes. This keeps you in lighter sleep stages so you wake up feeling alert rather than foggy. If you nap for around 30 minutes, you risk entering deep sleep and experiencing sleep inertia, which can leave you feeling worse temporarily.
Can napping too much be a sign of a sleep disorder?
It can be. If you feel an overwhelming need to nap every day or you still feel tired after napping, it could indicate an underlying condition like sleep apnea or a TMJ-related sleep disturbance. Persistent daytime fatigue is worth discussing with a healthcare provider who specializes in sleep health.
What time of day is best for taking a healthy nap?
The best time to nap is between 1:00 PM and 3:00 PM. This window aligns with a natural dip in your circadian rhythm, making it easier to fall asleep and wake up refreshed. Napping later in the afternoon or evening can make it harder to fall asleep at bedtime.
Do naps improve heart health according to research?
Research suggests they can. A 2019 study published in the journal Heart found that people who napped once or twice a week had a 48% lower risk of cardiovascular events compared to non-nappers. While more research is ongoing, the evidence points to occasional napping as a heart-healthy habit when combined with good overall sleep practices.
Written by: Dr. Farshid Ariz, DMD — Periodontist, TMJ & Sleep Centre SFV, Brentwood, California