How much exercise is enough?

A 2007 study found that less than an hour of moderate exercise per week reduced the risk of early death from all causes by at least 15 and 23 respectively. Photo: AFP

Getting inactive people to do a little bit of physical activity, even if they don’t meet current exercise recommendations, might provide greater population health gains.

UN recommendations that people should do at least two-and-a-half hours’ physical activity a week are unworkable for some individuals, health experts argued recently.