Bernard O'Shea: Here's why I love a good nap — I'm not lazy, it's science

Unveiling the secret behind genius? It is the noble art of napping - a brain reboot that even history's brightest minds couldn't resist. Spoiler: It's not just for toddlers and cats.

Bernard O'Shea. Photograph Moya Nolan

With great power comes a great need to take a nap.” — Rick Riordan

Have you ever felt like you’ve been ambushed by an invisible sleep ninja right after lunch? Because that’s me every single Sunday. My fascination with naps began not out of laziness but sheer amazement at their power. Following a nap so sublime it felt revolutionary, I pondered: Are naps our hidden arsenal for rejuvenation, or merely a detour to Slumberville?

Science has some comforting news for us nap enthusiasts. Research reveals that a concise nap, around 20-30 minutes, can significantly sharpen our brain functions, akin to a system reboot. It’s a fine line, though; exceed this sweet spot, and you might awaken as if from a deep hibernation, bewildered and disoriented.

As we journey into adulthood, the perception of napping transforms, often tinged with the stigma of laziness or a perceived lack of drive. Yet, the natural cadence of our circadian rhythms, especially the afternoon slump characterised by a drop in core body temperature and a surge in melatonin (the sleep hormone), reveals a biological blueprint for daytime rest.

Diving into history, it’s clear that napping is no modern fad. Pre-industrial societies embraced segmented sleeping schedules, essentially hosting mini nap festivals daily. The sleep habits of our ancestors reveal a stark contrast to today’s consolidated nighttime sleep, a product of the post-industrial age.

And if napping seems synonymous with a lack of ambition, consider the habits of Albert Einstein, Leonardo da Vinci, and Winston Churchill. These notable figures were no strangers to daytime dozing, suggesting that there might just be a link between naps and genius, and that suggestion may come in the form of “Theta waves” (far from theta waves you brought up on)

Theta waves, a type of brainwave prominent during certain stages of sleep, play a fascinating role in napping and the rejuvenation of our minds. These waves are most commonly associated with light sleep, meditation, and, crucially, the initial stages of naps. Understanding the activity of theta waves during napping offers intriguing insights into how brief rest periods can significantly enhance cognitive functions, emotional well-being, and overall brain health.

When we nap, especially during short naps that don’t extend beyond 20 minutes, our brain predominantly operates in the realm of theta waves. This stage is instrumental in transitioning the mind from wakefulness to relaxation without plunging into the deeper, more disorienting sleep phases. The presence of theta waves during these short naps is critical to their restorative power.

Furthermore, theta waves during napping have been associated with cognitive reset, providing mental clarity that can break through the fog of fatigue or overwork. This is beneficial in today’s fast-paced world, where cognitive overload is common. A brief nap can act as a mental cleanse, washing away the clutter of overstimulation and leaving a more transparent, focused mind in its wake.

However, the biggest trick to beneficial napping lies in its execution. The golden rules? Timing is crucial; aim for that post-lunch lull.

Location matters; find your cosy corner. Duration is critical; set a limit of 20 minutes to avoid grogginess. The allure of the midday nap, after indulging in a sumptuous Sunday lunch, can be irresistible, sparking a blend of personal curiosity and scientific inquiry. At a recent family event, I drifted off so profoundly that I awoke more adorned than a king, with no memory of how I acquired such comforts. It’s one of those nap mysteries that remain unsolved but thoroughly enjoyed.

The rejuvenation felt? Absolutely unmatched. The bollicking I received from my wife … not so much.

Ultimately, napping is about enhancing life, not escaping it. Whether you’re a nap novice or aim to follow in the footsteps of history’s brightest minds, there’s a nap with your name on it. Remember, moderation is the secret. A nap is your brain’s mini holiday, not an extended leave.

So next, when you feel the pull of post-lunch drowsiness, don’t resist. Embrace it. You’re not indulging in laziness; you’re engaging in a practice endorsed by some of the most brilliant minds in history. Your next groundbreaking idea might just be one nap away.