By Assistant Professor Neil Chapman
We’ve long been told exercise needs to be a full meal – an hour at the gym, a long run, a serious commitment.
Turns out, our bodies are perfectly happy with snacks. Not the protein bar kind, the movement kind.
New research is showing that two minutes here, two minutes there across the day is enough to cut the risk of dying from heart disease almost in half. But there’s a catch – you have to really mean it.
It’s known by the complicated name Vigorous Intensity Lifestyle Physical Activity (VILPA) but the idea is simple.
Instead of one long session, VILPA involves short, sharp bites of activity across the day, as little as one or two minutes at a time, pushing yourself as hard as you can.
It’s an approach now backed by serious science, and it’s changing how we think about fitness for busy people.
In one recent study, Australian scientists looked at 25,000 people who reported doing no formal exercise at all.
Instead of sending them to a gym, they asked them to add three short bursts of vigorous movement into their everyday routine.
Those bursts could be walking fast for the bus, climbing stairs, carrying shopping or rushing up a hill – nothing fancy, just pushing themselves that bit harder in three two-minute sessions.
The results of that daily six minutes were remarkable.
There was a 38 to 40 per cent reduction in the risk of dying from cancer and nearly a 50 per cent reduction in the risk of cardiovascular death.
Another large study found that just 15 minutes of moderate activity a day reduced the risk of dying from any cause by 14 per cent and added roughly three years to life expectancy.
What this demonstrates is that as little as six minutes spread across the day can be a total gamechanger.
Not having enough time is the most common reason I hear from people about why they don’t exercise.
We now know there’s no need to block out an hour, we just need to notice moments that already exist and turn them into movement.
Waiting for the kettle? Walk up and down the stairs quickly. Late for a meeting? Walk like you mean it. Walking the dog? Let the dog set the pace for two minutes instead of strolling.
The only rule is intensity – you want to be a little breathless, unable to chat or sing. Think “slightly uncomfortable but doable”.
If you prefer something more structured, this idea overlaps with high-intensity interval training which involves short periods of hard effort followed by recovery.
You can do this on a walk or jog by sprinting between two light poles, then slowing down for three, and repeating a few times.
Strength training can also be snack-sized.
There is growing evidence for what I call the one-set wonder.
Instead of doing three sets of everything, you do one hard set with as many reps as you can manage of squats, push-ups, rows or presses.
One set per exercise, done properly, can still build strength and muscle.
Researchers found that people doing one set of several exercises twice a week improved muscle size, strength and endurance in just eight weeks.
The concept behind all of this is called the minimum effective dose – what is the least amount of exercise you can do and still get a health benefit?
For many people, the answer is much less than they think.
So here’s your snack-sized challenge – three bursts of movement each day, two minutes each.
If you want to add strength, choose three or four basic exercises and do one hard set of each twice a week.
This isn’t about becoming an athlete; it’s about making daily movement fit into real life.
When exercise feels too big, make it snack-sized, consistency will beat perfection every time.
- Dr Neil Chapman is an exercise physiologist and Associate Dean of Clinical Services at Bond University.