Even low levels of weekly exercise could help reduce blood pressure and improve fitness, scientists say.
Experts say walking for half an hour, five days a week, is the minimum required to achieve health benefits.
But a Journal of Epidemiology and Community Health report from Northern Ireland found walking on just three days a week gave similar benefits.
The finding could encourage those with sedentary lifestyles to take up exercise gradually, the authors say.
This could be helpful as few people currently meet the minimum recommendations for exercise, with many saying they do not have enough time. Click here for full article