What if your future was decided in a five-minute slot? For many, extending life expectancy means draconian diets and hours of intensive sport. The latest data from large international cohorts tell a completely different story: it is sometimes tiny margins – a few minutes stolen from the sofa or added to sleep – that make the difference in the long term.
Two recent studies published in medical journals The Lancet And eClinicalMedicine follow tens of thousands of adults equipped with accelerometers, these small sensors that actually measure how much we move, how much we sleep and what we eat. They show that very small daily changes translate into several years oflife expectancy earned, often in good health!
Small changes in physical activity: a discreet lever for living longer
Physical inactivity is responsible for approximately 7 to 9% of global mortality. In a meta-analysis involving 40,327 people in Norway, Sweden and the United States, then 94,719 volunteers from UK Biobank analyzed separately, the researchers calculated the effect of tiny increases inphysical activity moderate to vigorous. Adding just 5 minutes a day among the least active adults was associated with 6% fewer deaths, and 10% if almost the entire population made this small effort.
The time spent sitting also weighs heavily. Reducing sedentary time by 30 minutes per day corresponded to 3% preventable deaths among those most at risk and 7.3% at the population level. In UK Biobank, a similar decline was still linked to 4.5% fewer deaths. Clearly, transforming half an hour of motionless television into leisurely walking, light cleaning or gardening is not a statistical detail.
Sleep, movement, diet: the trio that adds years to life
The other study, carried out on 59,078 participants from the UK Biobank, focuses on the sleep-activity-nutrition trio, summarized by the acronym SPAN. The profile considered optimal combined 7.2 to 8.0 hours of
sleep per night, more than 42 minutes daily of moderate to vigorous activity, and a dietary quality score between 57.5 and 72.5 out of 100, reflecting more vegetables, whole grains, and fewer sugary drinks. This lifestyle was associated with an additional 9.35 years of lifespan and 9.45 years of life free of cardiovascular disease, cancer, type 2 diabetes, chronic obstructive pulmonary disease, or dementia.
The researchers then watched what happened with minimal adjustments. A “pack” combining 5 minutes more sleep per day, 1.9 additional minutes of moderate to vigorous activity and 5 points gained on the food score – for example half a serving of vegetables or slightly more whole grains – was associated with an additional year of life. For healthy living, a gain of 24 minutes of sleep, 3.7 minutes of activity and 23 dietary quality points corresponded to four additional years without serious illness.
Translating science into everyday micro-habits
Behind these figures, the idea is not to disrupt your entire lifestyle at once, but to slip realistic micro-routines into the day. Some examples aligned with the orders of magnitude of the studies:
- Add 5 minutes of brisk walking after leaving the metro or after lunch;
- Get up after each phone call to reduce sitting time by half an hour during the day;
- Bring your bedtime forward by 5 to 10 minutes to get some restful sleep;
- Add a small portion of vegetables or replace a sugary drink with water to improve your
food.
Minute by minute, these adjustments remain almost imperceptible. Put end to end, they nevertheless draw, in the epidemiologists’ curves, several years of life gained and more years lived without serious illness. For longevity specialists, this gradual approach marks a shift in perspective: long-term health does not only depend on big choices, but also on everything that lasts five minutes every day.
Asked about the results of the study by Science Media Centre, Dr Daniel Bailey, Reader in Health Sciences, Medicine and Life Sciences at Brunel University London, points out that: “Lhe most promising result of this study is that just 5 additional minutes per day of moderate-to-vigorous intensity physical activity is beneficial. This should be achievable for most people, even those who already do very little physical activity.e”.