Short, well-timed naps of 20-30 minutes can enhance cognitive function and alertness
Published Date – Friday, 6/16/23 at 12:30pm
Dr. Moulika Mandal
Extensive research supports the concept of the “afternoon nap,” transforming napping from an indicator of laziness and inefficiency into a way to improve productivity and brain health. Some workplaces, including Google, Cisco, and Ben and Jerry’s, have implemented nap pods to facilitate employee rejuvenation through naps.
Additionally, some gyms and fitness centers educate individuals on relaxation techniques and actively promote napping. From Winston Churchill to Mariah Carey, advocates of the afternoon nap span the spectrum.
benefit
Enhances Brain Function: We live in an environment that constantly stimulates the brain. Short restorative breaks give the brain an opportunity to consolidate information, process emotions, and repair itself. Taking regular naps can improve problem-solving and decision-making skills, alertness, and productivity. Short naps of up to two hours have been shown to enhance cognitive function, especially alertness, according to a meta-analysis (Dutheil et al., 2021).
Promotes mental health: Naps can reduce negative affect and enhance mood in response to acute stressors (Wofford et al., 2022). People who nap regularly report higher levels of well-being. Additionally, short naps have been found to help improve emotional regulation, and dreaming can serve as a mechanism for dealing with negative emotional experiences. During adequate sleep, effective communication and collaboration between brain regions (specifically the medial prefrontal cortex and amygdala) contribute to enhanced emotional control and overall well-being.
Boosts Physical Health: For all the wear and tear that occurs while awake, the body repairs itself while asleep. It helps relieve muscle tension, lower blood pressure and promote relaxation. A Swiss study found that people who napped once or twice a week had a lower risk of cardiovascular events (Häusler et al., 2019).
do it right
The right time: Early afternoon naps are better for napping, and late afternoon naps can interfere with nighttime sleep, suggests Dr. Suzanne Bertisch, an assistant professor at Harvard Medical School. The Sleep Foundation recommends sleeping between 12:00 am and 2:00 pm, as lunch can lead to decreased productivity and alertness. Also, the optimal duration of a nap is 20-30 minutes.
Shorter naps prevent a person from entering the deep sleep stages, which can lead to drowsiness. Frequent and prolonged napping increases the risk of cardiovascular disease (Yamada et al., 2015). Daytime naps of more than 30 minutes have been linked to a higher likelihood of developing nonalcoholic fatty liver disease (NAFLD). Another side effect of daytime napping is the release of inflammatory cytokines by the immune system, which can lead to inflammation in the body (Qu et al., 2014). Although the mechanism is unclear, the correlation does exist.
Maintaining a consistent sleep-wake schedule helps regulate our body’s internal clock, known as the circadian rhythm. Although initially challenging, perseverance made it possible. Establishing a predictable simultaneous bed and wake pattern matches our natural sleep-wake cycle. This consistency enhances the body’s sleep and wake signals, promoting easier sleep and a refreshed awakening. It improves sleep quality, daytime alertness, and overall physical and mental health. Sticking to a regular sleep schedule and starting naps at the same time every day trains our bodies to follow a healthy and synchronized sleep routine.
Create a distraction-free space: A quiet and comfortable environment, preferably away from noise and distractions, can improve sleep quality. Simple measures like dimming the lights or using a sleep mask, a comfortable temperature, and comfortable clothing/bedding can create a helpful atmosphere.
Correct Habits: First of all, due to professional and personal constraints, it is understandable that not everyone can take naps during the day. Second, even when circumstances allow for naps, it can take some time and practice to achieve optimal results. For most people, sleep is primarily an involuntary process, making it challenging to precisely time naps and wake-ups before entering deeper stages of sleep.
The concept of a “coffee nap” involves consuming caffeine prior to a short sleep. It takes about 20-30 minutes for the caffeine to take effect. Additionally, caffeine helps clear adenosine, a compound that contributes to feelings of fatigue. The combined effects of caffeine and reduced adenosine levels can increase alertness and make you feel more refreshed for an effective nap.
Emphasizing the importance of getting the right type of nap, rather than random naps, is crucial. Incorrect napping habits can have adverse effects on our health. To ensure maximum benefit, it is important to consider factors such as the timing, duration, and environmental conditions of the nap.
Short naps of 20-30 minutes can enhance cognitive function and alertness, while longer or frequent naps may negatively affect cardiovascular health and the risk of diseases such as non-alcoholic fatty liver disease. By knowing and implementing proper napping techniques, we can harness the positive effects of napping and avoid any potential harm.
