We have all had a poor night’s sleep and then tried to make up for it the following day—perhaps by going to bed much earlier or squeezing in an afternoon nap.
But research suggests these common sleep “fixes” may not be effective. Instead, experts say people should focus on the so‑called 7:1 rule, a habit that has been linked to improved health and longevity.
According to a Gallup poll, a majority of U.S. adults, 57 percent, say they would feel better if they got more sleep. Newsweek spoke to sleep specialists about the rule, which has been scientifically shown to boost long‑term health—and the advice may surprise you.
Dr. John La Puma, a board-certified internist, told Newsweek: “The rule is simple.”
What Is the 7:1 Rule?
According to the National Sleep Foundation, adults aged 18 to 64 should aim for seven to nine hours of sleep per night, while those over 65 may need slightly less, with seven to eight hours recommended. But did you know that when you go to bed is just as important?
It involves falling asleep for seven hours within the same one‑hour window, at least five days a week.
La Puma said: “Most people trying to improve their sleep are chasing the wrong number. Hours matter, but when you sleep matters more than how long.”
What Are the Benefits of the 7:1 Rule?
A major study by Vitality and The London School of Economics and Political Science (LSE), which tracked more than 47 million nights of sleep, found that getting seven hours of sleep at roughly the same time each night could reduce the risk of early death by 24 percent and add up to four years to life expectancy.
Newsweek also spoke to pediatric sleep disorder and pulmonary disease specialist Dr. Saema Tahir, who explained why consistency matters—even after a poor night’s rest.
She said: “When patients maintain consistency after a poor night of sleep, they keep their internal clock steady and allow sleep pressure to rebuild naturally. This leads to improved sleep efficiency, meaning more of the time in bed is spent asleep rather than laying there awake.”
Going to bed at the same time each night also helps prevent the brain from associating the bed with “wakefulness and frustration instead of sleep,” she added.
“It also helps prevent the progression to chronic insomnia, which can be driven by behavioral responses than the initial sleep disruption in some individuals.”
Tahir said the 7:1 model can also help stabilize mood, energy levels and cognitive performance.
“Irregular sleep timing itself is associated with worse health outcomes,” she said.
Indeed, poor sleep has been linked to memory loss and faster brain aging.
How to Put the 7:1 Rule Into Practice
La Puma shared the following tips:
Get outside within an hour of waking. Ten minutes of morning light resets your circadian clock and sets a timer for melatonin release 14 to 16 hours later. Indoor light does not do this.Eat at consistent times and stop eating two to three hours before bed. Your liver and gut have their own internal clocks driven by meal timing, not light. Late or irregular eating sends conflicting signals.Dim lights and put screens down 60 minutes before bed, at the same time every night. A warm shower beforehand accelerates the core temperature drop your brain uses as a sleep signal.Your body already knows how to sleep well. It needs the same cues at the same time every day.
