The No. 1 Habit To Start in Your 50s That Could Add Years to Your Life

Day-to-day lifestyle habits can majorly impact your overall health and well-being in ways you may not realize. It’s not just about how much you exercise or your eating habits. Your social life, stress levels, and the little routines and rituals you establish all contribute to the big picture. Every choice you make could help—or hinder—your brain health and longevity. Science says that your daily regimen can significantly impact your cognitive ability and even increase your risk of developing dementia. 

So listen carefully, because researchers from Stanford University have identified the best habit to build and maintain in your 50s in order to support a long, healthy life.

The Research

In a study published in Science on March 12, 2026, a team of researchers looked at the habits of 81 African turquoise killifish. Although the lifespan of this species is only four to eight months, they have complex brains, according to Science Daily. Each fish was common genetically and resided in the same controlled environments. By the time they reached adulthood, it was quite apparent that each had unique patterns of sleeping and swimming. 

The fish that lived longer were found to be more active during the day, swimming more frequently and faster, and had a solid night’s sleep. The less active ones had shorter lifespans.

Based on all this, the researchers learned that simple midlife habits—including the way we sleep and move—could predict how long we may live.

Consistent Daily Exercise Is Essential—Along With Getting a Solid Night’s Rest

When it comes to establishing healthy habits, it all seems to boil down to a good night’s sleep—and the key word here is “night.” Staying active during the day is essential as well—and consistency is always king. (Further research backs up the goodness of regular exercise, noting that individuals who perform a solid variety of workouts have a 19% lower risk of early mortality.)

The research team compared aging to a game of Jenga. Once constructed, you can remove quite a few blocks and nothing happens. It only takes one move that makes everything change. In fact, it can all come tumbling down.

“Behavioral changes pretty early on in life are telling us about future health and future lifespan,” explained Wu Tsai Neuro postdoctoral scholar Claire Bedbrook, co-leader of the research.

Wu Tsai Neuro postdoctoral scholar Ravi Nath, who led the research alongside Bedbrook, noted that behavior can end up revealing key insights into aging.

"You can look at two animals of the same chronological age and see from their behavior alone that they're aging very differently,” Nath added.

Likewise, you can have siblings—or even twins—who are raised with similar eating patterns and activities. It’s the choices we make in life that can impact our entire path.

Of course, there are some things that occur naturally in life. As we age, sleep patterns can shift—and not for the better, with insomnia being the most common sleep issue that adults 60+ face. These declines can result in decreased cognitive abilities and even neurological diseases. Nath’s plan is to research the effect improved sleep has on healthier aging and how to be proactive.