Most of us have a rigid mental image of what an “intelligent” person is. It’s someone who is flawless. Always organized. Quick to react. Always on top of everything. The kind of person who color-codes their calendar, responds immediately to emails, and thrives under pressure. However, according to Forbes magazine, as convincing (and popular) as this image may be, it is wrong.
This version of intelligence, besides being unrealistic, is completely unsustainable. Human cognition does not function like a machine capable of constantly operating at its maximum capacity. In reality, genuinely intelligent people understand that their mental, physical, and emotional resources are finite. If they want to perform well in the long term, they know they need to protect them carefully.
Seen from the outside, however, this may seem strange—and sometimes even like laziness. Below are three of these “lazy” habits that are, in fact, supported by research on intelligence.
Avoiding Unnecessary Work
This habit seems contradictory. How can an intelligent person avoid work? Isn’t that precisely what defines them? But upon closer examination, we realize that this isn’t about a lack of work ethic—it’s about avoiding unnecessary effort.
Taking shortcuts, automating tasks, or choosing the path of least resistance is often seen as “taking the easy way out.” In reality, it may reflect something far more sophisticated: efficiency.
A 2009 review published in Neuroscience & Biobehavioral Reviews explored the so-called neural efficiency hypothesis of intelligence. This theory suggests that individuals with higher intelligence show less brain activation when performing cognitive tasks. Although this might be interpreted as disinterest, it actually means that the brain is functioning more efficiently.
Intelligent people arrive at the same answer as others, but using fewer resources. For example, imagine two people solving the same problem at work. One analyzes each step meticulously. The other recognizes patterns, eliminates redundant steps, and arrives at the solution in half the time.
Someone less observant might think the second person isn’t trying hard enough. But in reality, they’ve found the most efficient path. That’s why people considered “lazy” are often the ones who create better systems: they automate repetitive tasks, question inefficient processes, and seek more effective ways to work.
Sleeping (or napping) frequently
Few behaviors are as closely associated with laziness as sleeping in or taking naps during the day. However, neuroscience tells a different story.
A 2015 study published in Scientific Reports examined the relationship between fluid intelligence and sleep patterns—specifically, the so-called “sleep spindles” that occur during a nap. These are bursts of brain activity that occur during certain stages of sleep and are associated with memory consolidation and learning.
The researchers found a positive association between fluid intelligence and the duration of these sleep spindles. Simply put, more intelligent people exhibit sleep patterns linked to more effective cognitive processing, even during naps.
This challenges the cultural notion of the “tireless genius” who sacrifices sleep in the name of productivity. In reality, high-performing people do the opposite: they prioritize their sleep.
Sleep is not a passive period. It is an essential process that supports fundamental functions such as memory, emotional regulation, creativity, and complex reasoning. When sleep is deprived, cognitive ability declines: attention wanes, decision-making deteriorates, and emotions become harder to manage.
So, when someone goes to bed early, wakes up later, or takes naps, don’t immediately assume they’re lazy. For intelligent people, these habits are a deliberate investment in their mental performance.
Letting Things Go
We tend to admire people who are constantly engaged: who respond to everything, defend their positions, and always have something to say. On the other hand, someone who ignores conflicts, avoids arguments, or says “I don’t care” may seem apathetic.
But this interpretation overlooks a key point: often, not reacting is a sign of emotional intelligence, not indifference.
Recent research, including a 2025 study published in Frontiers in Public Health, suggests that people with higher emotional intelligence are better able to manage stress and regulate their emotions. One of the key mechanisms is what’s known as psychological detachment: the ability to mentally disconnect from stressors, especially outside of work.
Imagine two colleagues who receive mild criticism from their boss. One spends the day dwelling on it. The other acknowledges the feedback, takes in what’s useful, discards the rest, and moves on.
To an outside observer, the second colleague might seem disinterested. But in reality, they made a strategic choice: not to waste emotional energy on something that isn’t worth it.
That’s what it means to pick your battles. Not everything deserves a response. Not everything needs to be corrected. And not every problem requires an immediate solution. Letting certain things go means knowing how to set priorities—and for smart people, that’s essential for conserving energy for what really matters.
