The five-minute fix that isn’t
The idea that five minutes of daily exercise could be enough to keep you healthy sounds like the sort of life hack that busy people dream about. Recent headlines, based on a study published in The Lancet on 14 January 2026, have fuelled that hope. But according to Prof Devi Sridhar, chair of global public health at the University of Edinburgh, the claim is misleading. Five minutes of daily exercise, she argues, is simply not enough for long-term health – and the study itself does not say what many people think it does.
What the study actually found
The research in question analysed data from more than 135,000 adults. That included individual-level data from seven large studies in the United States, Norway and Sweden, covering roughly 40,000 participants, and data from the UK Biobank, which included about 95,000 participants. The researchers modelled what would happen if everyone increased their moderate-to-vigorous physical activity by five minutes a day. Their key finding: adding that small amount could prevent around 6% of deaths among the least active individuals. When the analysis was applied across the general population – excluding the most active – the estimate rose to a 10% reduction in deaths. The study also looked at reducing sedentary time by 30 minutes a day, which was associated with a 3% reduction in deaths among the least active and 7% across the population.
However, the researchers themselves were cautious. They stressed that the results highlight potential population-level benefits and should not be taken as personalised exercise recommendations. They also noted the need for further research in low- and middle-income countries. Within the UK Biobank data, the effect was notably smaller: for the least active groups, the estimated reduction in deaths was around 2%, not 6%. This discrepancy matters because participants in the UK Biobank who wore accelerometers were generally of higher socioeconomic status, with greater educational attainment, lower body mass index and better self-rated health than the full cohort.
Why the numbers don’t tell the whole story
Prof Sridhar points out that the study did not involve taking sedentary people and asking them to do five minutes of exercise a day. Instead, it used existing data on physical activity to model the relationship between movement and later death, then projected what a five-minute increase might achieve for anyone, regardless of their current activity level. “I would say that what they found reinforces that something is better than nothing, and the biggest health gains in more movement are found in those who are the most inactive,” she writes. “But I wouldn’t base a workout routine on it.”
Another problem, she argues, is the focus on time increments alone. The body needs a “triangle” of movement types, particularly as the years go on: cardiovascular exercise, strength training and flexibility work. Cardio – such as walking, cycling and swimming – strengthens the heart and blood vessels. Strength training – squats, press-ups, carrying heavy loads – maintains muscle mass. Flexibility – stretching – reduces the risk of injury and chronic pain. Doing all three over the course of a week takes time, and five minutes cannot cover them.
The study’s authors acknowledged this limitation, noting that their findings were not intended to replace more comprehensive guidelines. Yet the public conversation has been dominated by the “five minutes” headline, obscuring the nuance. The idea appeals, in part, because of a broader cultural trend toward optimisation and minimal effort. The article by Prof Sridhar references the podcast host Steven Bartlett, who has said that three glasses of wine “ruined three days of my life” because of disrupted sleep, poor food choices, reduced podcasting performance and skipped workouts – all tracked via his wearable device. That mindset, critics argue, can detract from enjoying life and spontaneity. Similarly, the rise of events such as Hyrox – an indoor fitness competition that combines 8km of running with eight functional workout stations – reflects the demand for measurable, time-efficient fitness challenges. But for most people, the baseline question should be about sustainable, varied movement, not the absolute minimum.
What the experts recommend
The World Health Organization’s physical activity guidelines remain the established benchmark. Based on extensive evidence from systematic reviews, meta-analyses and prospective cohort studies, the WHO recommends that adults undertake 150 to 300 minutes of moderate-intensity aerobic activity per week, or 75 to 150 minutes of vigorous-intensity activity, or an equivalent combination. That works out to roughly 20 to 40 minutes of moderate activity a day. For additional health benefits, the WHO advises increasing moderate activity beyond 300 minutes per week or vigorous activity beyond 150 minutes. The guidelines also call for muscle-strengthening activities involving all major muscle groups on two or more days per week, and for reducing sedentary behaviour across all age groups.
Moderate-intensity activity means raising your heart rate and breathing enough to hold a conversation but not to sing – brisk walking, water aerobics, cycling or dancing. Vigorous-intensity activity makes you breathe hard and fast, making conversation difficult – running, swimming or high-impact aerobics. The WHO’s recommended doses are tied to the most significant impacts on a wide range of health measurements, from cardiovascular disease to diabetes and mental health, while remaining achievable for most people.
There is some emerging evidence that the “weekend warrior” pattern – accumulating most of the weekly recommended activity in one or two sessions – can also deliver cognitive benefits. One study found that weekend warriors had a 25% reduction in the risk of mild dementia compared with inactive individuals, and a 13% lower risk of mild cognitive impairment. Another study in the British Journal of Sports Medicine reported that weekend warriors who exercised once or twice per week had a 15% reduction in the risk of mild dementia, compared with 10% for those who exercised more often. The authors of that research stressed that these are observational findings and not a substitute for regular exercise, but they highlight how even small adjustments – not necessarily five minutes a day – can contribute to better health.
For Prof Sridhar, the real question is not whether we can get away with five minutes, but why we cannot find 20 minutes – the bare minimum she considers necessary – in each 24-hour day. “If that’s how our society is structured, and how our daily lives and work is organised,” she says, “then that’s the greatest travesty of all.” The bar has come down to make exercise more accessible, but lowering it to five minutes risks making it meaningless.