Whether it’s emotional intelligence, physical performance, all-cause mortality risk, or workplace output, sleep is intricately connected to the quality and outcomes of each. Yet it remains one of the most neglected variables in executive performance.
Leaders routinely trade it for more hours, convinced they’re managing fine or that they’re among the less than 1% carrying the rare DEC2 genetic variant that genuinely allows someone to thrive on four to six hours—they’re almost certainly not.
As Why We Sleep author Dr. Matthew Walker has noted, “Sleep is the single most effective daily reset available to the human brain and body.” For executives, founders, and high-level operators, the reasons run deeper than most realize.
Sleep Is An Essential Worker For Leaders
Essential workers rarely get proper recognition. But let a week’s worth of waste removal go unscheduled at any household or office, and the consequences become impossible to ignore: the clutter, the smell, and the drag on everyone operating in that environment.
That same dynamic plays inside our brains. Sleep is essentially the night shift for one of your body’s most important organs. Your brain runs a waste-clearance system called the glymphatic system. During wakefulness, it operates at roughly ten percent capacity.
During deep sleep, it floods your brain with cerebrospinal fluid. This process flushes out toxic metabolic byproducts, including amyloid-beta. The accumulation of this protein has been linked to Alzheimer’s disease. Research published in Molecular Psychiatry found that poor sleep quality directly suppresses glymphatic function, disrupting brain networks governing memory and cognitive performance.
Those disruptions aren’t merely biological. A CEO running on five hours isn’t just fatigue; they’re also walking into a board meeting, a merger conversation, or a critical hire with yesterday’s neural waste still on the books.
Sleep Is Where Strategy Gets Finished
Better sleep produces better leadership, with its effects felt throughout the organization. During slow-wave sleep, a leader’s brain consolidates the day’s information, extracts patterns from the complexities encountered, and builds connections between seemingly unrelated ideas.
The strategic insights that matter most—how to respond to a competitive threat, whether an acquisition makes sense, how to restructure around AI, and which leadership gaps are stealthily costing the company—are only partly products of rigorous thinking. They also come from the sleep quality you accumulate or sacrifice consistently.
Jeff Bezos’s now-famous commitment to eight hours was ultimately about preserving the cognitive state required for the few decisions that disproportionately shape a company’s trajectory. For any executive, sleep is maintenance for the primary tool that their role demands.
The Sleep Paradox That Gets Leaders
Over time, poor sleep has a cumulative effect, and a paradoxical one: the more sleep-deprived you are, the less accurately you perceive it.
A 2003 study published in Sleep found that individuals restricted to six hours per night for two weeks developed cognitive deficits. These were equivalent to two consecutive nights of total sleep deprivation. Yet, participants consistently reported feeling only slightly sleepy. Their subjective assessment of impairment had effectively disconnected from reality.
For CEOs and leaders who carry significant responsibilities, that gap has consequences well beyond personal health. Many leaders, convinced they’re operating effectively on five or six hours of sleep, make hiring decisions, capital allocation calls, and strategic judgments from a state they can’t accurately self-assess.
And the shortened-sleep nights are precisely the ones before the moments that matter most: board presentations, fundraising conversations, and acquisition negotiations.
Our biology is sophisticated and adapts to many situations, including chronic sleep deprivation. But the ability to get by on subpar sleep and the ability to thrive on it are not the same thing. The bridge between a good decision and a great one, the kind that meaningfully shifts an organization’s trajectory, is often a good night’s sleep.
This article was originally published on Forbes.com