Exercise snacks: can one-minute bursts of effort really count?

No time for the gym? Studies of over 25,000 non-exercisers link a few one-minute bursts of vigorous effort a day, like a fast stair climb, to lower risk of early death and heart disease.

You take the lift to the third floor, then spend the evening feeling guilty about the gym session you skipped. Here is the twist. In two large studies, people who never exercised but had a few brief bursts of hard effort in their day, like a brisk climb or a hurried walk, had noticeably lower risks of early death and heart disease than those who never got out of breath at all ²³.

Researchers call these short, hard efforts exercise snacks. The scientific name is clunkier: vigorous intermittent lifestyle physical activity, or VILPA. It means the bursts of effort hidden inside ordinary life. A fast climb up the stairs, a dash to catch the metro, carrying heavy bags across a car park at pace. No kit, no changing clothes, no membership.

Nearly a third of adults worldwide, 31%, do not meet recommended activity levels ¹. For them, and for anyone whose week has been swallowed by work, the idea is appealing. So what does the research actually show, and where does it stop?

What counts as an exercise snack?

An exercise snack is a short bout of activity hard enough to make you breathe heavily, done as part of your day rather than as a planned workout. In the research, most of these bouts were very short indeed. Of all the bursts recorded in the biggest study, 92.3% lasted up to one minute ².

The key word is vigorous. A gentle stroll to the kitchen is good for you, but it is not a snack in this sense. The test is simple. If you could sing comfortably, it is not vigorous. If speaking in full sentences feels hard, you are there.

The study that put one-minute bursts on the map

In 2022, researchers led by Emmanuel Stamatakis published a study in Nature Medicine that followed 25,241 adults from the UK Biobank who did no leisure-time exercise and took no more than one recreational walk a week ². Each wore an activity tracker that picked up even brief bursts of vigorous movement. Their average age was 61.8, and they were followed for a mean of 6.9 years ².

The results were striking. About three one-minute bursts a day, the typical amount in the group, was associated with a 38% to 40% lower risk of dying from any cause or from cancer, and a 48% to 49% lower risk of dying from cardiovascular disease, compared with doing none ². Even fewer than two bursts a day was linked to a 24% to 26% lower risk of death from any cause or cancer ².

The most underrated workout in your day might be the staircase you keep walking past.

Remember who these people were. They did not run, swim or lift. Their only vigorous activity came from daily life, which is exactly what makes the finding useful to someone with no free hour.

Do exercise snacks protect the heart?

A follow-up study, published in the British Journal of Sports Medicine in 2024, looked at heart attacks, heart failure and other major cardiovascular events in 22,368 non-exercising adults aged 40 to 79, tracked for about 7.9 years ³.

For women, the pattern was clear. Those who got a median of 3.4 minutes of vigorous incidental activity a day had a 45% lower risk of major cardiovascular events, a 51% lower risk of heart attack and a 67% lower risk of heart failure than women who got none ³. Even 1.2 to 1.6 minutes a day was linked to a 30% lower risk of major events ³.

For men, the picture was much weaker. The dose and response relationship was less clear and showed less evidence of statistical significance ³. That does not prove men gain nothing, but it does mean the headline heart numbers apply most firmly to women.

Can a few flights of stairs really improve fitness?

Here is the honest caveat. Both studies above are observational, so they show associations, not proof ²³. People who bound up stairs may already be healthier for reasons the researchers could not fully measure.

That is why a small trial from McMaster University in Canada is worth knowing about. Sedentary young adults were asked to climb a three-flight stairwell of 60 steps vigorously, three times a day, with one to four hours of rest between climbs, three days a week for six weeks ⁴. Compared with a group that did no training, the climbers had higher peak oxygen uptake at the end, a standard measure of cardiorespiratory fitness ⁴. There were only 12 people in each group and the authors described the gain as modest ⁴. Still, it shows the body does respond to these tiny doses, which makes the bigger observational findings more believable.

Are exercise snacks enough on their own?

Probably not, and nobody is claiming they are. The World Health Organization still recommends at least 150 minutes of moderate-intensity activity a week for adults, and it points out that muscle strengthening benefits everyone ¹. Think of exercise snacks as a floor, not a ceiling. They are a way to stop a hectic week from becoming a completely inactive one.

They also fit seasons when your usual routine falls apart. During smoggy weeks in north India, an indoor staircase can stand in for an outdoor run (our piece on exercising when the AQI is high explains why that swap matters). During wedding season, when evenings disappear into functions, a few brisk climbs before work keep something in the bank.

How to add exercise snacks to your day this week

You do not need a plan so much as a few triggers. Pick two or three of these and repeat them daily.

1. Own one staircase. Choose a set of stairs you use every day, at home, the office or the metro station, and climb it at a pace that leaves you breathing hard by the top.
2. Make walking urgent. For one minute of your walk to the car, the shop or the bus stop, walk as if you are late. Arms moving, long strides.
3. Carry with purpose. Bring the grocery bags or the water can up in one fast trip instead of three slow ones.
4. Play hard for a minute. If you have children or a dog, a minute of chasing in the park counts.
5. Stack them. Aim for three bursts spread across the day. That matches the typical amount linked to lower risk in the research ².

A few simple rules keep it safe. Hold the rail on stairs, wear proper footwear, and build up the pace over a week or two if you have been inactive for a long time. Effort should feel hard but controlled, never dizzy or painful. If you have a heart condition, high blood pressure, joint problems, are pregnant or take regular medication, speak to your doctor before adding vigorous efforts.

Tomorrow, when the lift doors open, you have a choice that takes about a minute. Over months, that minute appears to add up.

General information for healthy adults, not medical advice. Speak to a doctor before changing your training or diet if you have a health condition, are pregnant or take regular medication.