Do you live in the world's laziest country?
US scientists have amassed "planetary-scale" data from people's smartphones to see how active we really are. The Stanford University analysis of 68 million days' worth of minute-by-minute data showed the average number of daily steps was 4,961.Hong Kong was top averaging 6,880 a day, while Indonesia was bottom of the rankings with just 3,513.But the findings also uncovered intriguing details that could help tackle obesity.Most smartphones have a built-in accelerometer that can record steps and the researchers used anonymous data from more than 700,000 people who used the Argus activity monitoring app.Scott Delp, a professor of bioengineering and one of the researchers, said: "The study is 1,000 times larger than any previous study on human movement."There have been wonderful health surveys...