It’s widely understood that exercise is good for you, but how much should that be?

In the first global study of its kind into schoolchildren aged 11 to 17 years old, the World Health Organization (WHO) found that four in five of them are not active for even 60 minutes of exercise a day – that’s the minimum recommended amount.

In an interview with UN News’s Daniel Johnson, the agency’s Dr Leanne Riley explains why it is urgent that Governments do something about it – and how frozen Finland is already leading the way.