Even modest improvements in daily habits—such as a few extra minutes of brisk walking, slightly better sleep, and small dietary upgrades—can significantly improve lifespan and reduce mortality across populations. Recent studies highlight that these manageable changes offer a realistic and sustainable starting point for healthier living.
Tiny Daily Improvements, Big Gains in Longevity
According to a new study published in The Lancet eClinicalMedicine, adding just five minutes of sleep, two minutes of brisk walking, and half a serving of vegetables per day could extend life expectancy by up to one year among individuals with the poorest sleep, physical activity, and dietary habits.
Importantly, researchers emphasised that when combined, small improvements in sleep, physical activity, and diet deliver a far greater benefit than focusing on any single behaviour alone.
Defining Unhealthy and Optimal Behaviour Patterns
As reported by The Hindu, the study classified the worst lifestyle combination as approximately five-and-a-half hours of sleep per day, less than 10 minutes of physical activity, and poor diet quality. In contrast, the most optimal combination—seven to eight hours of sleep, at least 40 minutes of moderate to vigorous physical activity daily, and a healthy diet—was associated with more than nine additional years of life and improved years lived in good health.
Therefore, lifestyle optimisation does not require extreme changes; rather, consistent and balanced improvements matter most.
Why Combining Habits Matters More Than Doing One Thing Well
The researchers found that the combined impact of sleep, physical activity, and diet exceeds the sum of their individual effects. For example, gaining one year of life expectancy through improved sleep alone would require an additional 25 minutes of sleep per day. However, when paired with small increases in physical activity and better diet quality, the same benefit could be achieved with just five extra minutes of sleep.
As the authors noted, a minimum combined improvement of five minutes of sleep, about two minutes of moderate to vigorous physical activity, and a five-point increase in diet quality—such as adding half a serving of vegetables or 1.5 servings of whole grains—was linked to one additional year of lifespan.
Large-Scale Evidence from Long-Term Population Studies
The findings draw on data from nearly 60,000 participants in the UK Biobank recruited between 2006 and 2010 and followed for approximately eight years. Additionally, a subgroup wore wrist-based activity trackers for seven days between 2013 and 2015, enabling more accurate measurement of physical activity.
Five Minutes of Movement Can Cut Death Risk
In a separate study published in The Lancet, researchers reported that an extra five minutes of moderate physical activity—such as walking at five kilometres per hour—was associated with a 10% reduction in deaths among most adults and a 6% reduction among the least active individuals.
Moreover, reducing sedentary time by 30 minutes per day correlated with a 7% decline in all-cause mortality. A one-hour reduction in sedentary behaviour showed an even greater benefit, with a 13% drop in deaths, particularly among adults who typically spend around 10 hours a day sitting.
Greatest Benefits Seen Among the Least Active
Notably, the largest public health gains emerged when the least active 20% of the population increased their activity by just five minutes per day. This finding highlights how small, population-wide changes can translate into substantial reductions in mortality.
Public Health Implications and Need for Broader Research
The researchers stressed that these findings demonstrate the wide-reaching public health benefits of small, achievable improvements in physical activity. However, they cautioned that the results should not be interpreted as personalised exercise or lifestyle prescriptions.
Finally, they called for further research using wearable activity trackers in low- and middle-income countries, where age profiles, activity patterns, and health risks may differ significantly. The analysis included data from over 1.35 lakh adults across seven cohorts in Norway, Sweden, the US, and the UK Biobank, all followed for eight years.
Overall, the evidence reinforces a powerful message: even small, realistic lifestyle changes can meaningfully extend life and improve population health.