Smartwatches and wristbands commonly used by athletes and coaches do not always show accurate data on physical performance, according to a recent study. Although these devices are extremely popular, especially for planning workouts and tracking progress, in reality they often only give estimates – and these are not always reliable. <\/p>\n\n
They do not measure, they only count<\/strong> “It is not uncommon, for example, for the clock to define the activity as very strenuous, when in reality it is moderately strenuous and ineffective, or, on the contrary, practically maximal,” explains Kasiak.<\/p>\n\n