National Post (National Edition)
IN PRAISE OF NAPS
FEELING MIDDAY FATIGUE? A SHORT SHUT-EYE SESSION CAN HELP MAKE YOU MORE PRODUCTIVE
Of the many habits I've gained while working from home, my daily naps will be especially painful to give up if or when I return to an office. They have become essential downtime, an afternoon pick-me-up. Here's what the experts say:
THE DESIRE TO NAP
There are two biological processes that contribute to daily drowsiness, says Sara Mednick, a professor of cognitive science at the University of California at Irvine and author of Take a Nap! Change Your Life.
The first system is the circadian: It prompts you to stay awake when it's light out and asleep when it's dark. In the middle of the day, it causes the hormone cortisol to start decreasing from its morning high and your core body temperature to slightly dip. Losing heat helps you fall and stay asleep. The second is the homeostatic: It makes you sleepier the longer you've been awake. As the day progresses, it continually increases your “sleep pressure,” causing you to have a growing need for sleep.
But not all people are equally affected by these processes. And, of course, not everyone can or does give into it.
Needing a nap is “a reflection that you haven't got sufficient sleep at night to address your body's need for sleep,” says Lawrence Epstein, past president of the American Academy of Sleep Medicine and clinical director for sleep medicine at Boston's Brigham and Women's Hospital. And that can mean trouble. “It affects performance, concentration, mood,” Epstein says. It also “affects physiological processes involved in maintaining good health,” he says, noting links to obesity, hypertension and heart disease.
PROS AND CONS OF NAPS
For many who are sleep-deprived, a short nap is the ticket, Mednick says. “Your mood gets better, your creativity, your perceptual processing, your memory processing.”
The benefits of napping show up in study after study. Nappers perform as well on a pattern-recognition task as people who have slept overnight. Naps enhance creative problem-solving and can boost and restore brain power. Toddlers who nap express more joy. Adults nappers can tolerate frustration longer and feel less impulsive. People who nap once or twice a week have a lower risk of cardiovascular disease. And so on.
But many can't tolerate naps and feel groggy when they wake up. This may be because they go into heavy, slow-wave sleep, which is the deepest stage of sleep, making it difficult to return to the waking world. Naps can also disrupt that night's sleep. “Naps tend to be kind of a double-edged sword,” Epstein says. “If you're sleeping during the daytime, you're going to sleep less at night.”
Daytime sleepiness can also be a symptom of an underlying condition or sleeping disorder. If you're often napping or feeling sleepy during the day, try to extend your sleep at night. If that doesn't help, “you should probably be checking with your doctor or a sleep specialist,” Epstein says.
THE PANDEMIC'S EFFECT ON SLEEP
Epstein has found that pandemic sleep habits have veered in two directions — better and worse — which have had an effect on naps. Many people's sleep habits have gone awry. They may be suffering from greater insomnia and poorer sleeps. Additional time in bed doesn't mean it was quality time. Stress, illness, nightmares or a need to stay up to finish work set aside while caring for children have interrupted nightly rest, which means those people are more likely to need to nap. Others, freed from their alarm clocks, “are now getting more sleep and feeling more rested.”
Julia Hobsbawm, a British entrepreneur and writer, isn't surprised that at-home workers might be napping more. “Our lives, even in lockdown, tend to be full of stuff to do and endless digital distraction,” the author of The Simplicity Principle says. “Our brains start to behave like a computer which has been switched on for days on end: It gets worn out faster.”
HOW TO
NAP EFFECTIVELY
If you're in the napping camp, Mednick suggests setting an alarm for about 20 minutes, long enough to enable you to enter Stage 2 sleep. She considers this period of light sleep, in which your heartbeat and breathing slow and your muscles relax, “the reset button of sleep.” In a NASA study that found that naps helped pilots become more alert, 10 to 20 minutes was good. Experiment to see what refreshes you without making you groggy or ruining your bedtime.
Make yourself comfortable. Lie down if possible. One study found that rest in a bed had more benefits than rest in a seat. Use an eye mask and ear plugs if needed. Try to set aside your worries, perhaps by first engaging in a few minutes of mindful meditation. Breathe slowly and deeply. Concentrate on relaxing your muscles.
After your nap, if you need help becoming alert, splash your face with water or step into bright light. A caffeinated beverage might help — but not too late in the day, because it could adversely affect your overnight sleep.
If you've become a napper while working at home and are worried you won't be able to nap when you return to your office, “this is a great time to find out how much time you need to feel fully rested,” Epstein says. (Current recommendations are seven to nine hours a night for healthy adults.) Play with your schedule to see how many hours of nightly sleep you need. Then, when you return to the office, make sure you go to bed early enough to get in those hours. “You do that,” Epstein says, “and hopefully, you won't need a nap.”
BACK AT THE OFFICE?
A work environment shouldn't stop you from catching 40 winks if you want, though, Mednick says.
“It's actually in (employers') best interest to find ways to create a better-rested workforce,” Epstein says. Sleep problems increase rates of absenteeism and work-related accidents and decrease work productivity.
Mednick hopes companies will allow employees to continue to work from and nap at home after the pandemic. “Napping is not what lazy people do,” she says. “It's what people who are really effective and creative and self-regulating and conscientious do. Those are the type of people who nap.”