This week’s News Gadgets a fat lot of use counting calories

FITNESS trackers are rubbish at measuring how many calories you burn, a study claims.

While the gadgets can accurately track and monitor the wearer’s heart rate, they were a “long way out” with their calorie counting functions.

Stanford University scientists warned that people relying on the wristworn devices, such as Fitbits and Apple Watches, should be wary about using them to judge what to eat for lunch.

Euan Ashley, who led the research in the US, said: “People should know to take these estimates on calories with more than a pinch of salt.”