Activity trackers may overestimate sleep time
Wearable activity trackers that promise to monitor physical activity, sleep and other behaviours may be good at counting steps but bad at measuring sleep, says a new study.
Dec 28, 2015, 21:13 PM IST
Wearable activity trackers that promise to monitor physical activity, sleep and other behaviours may be good at counting steps but bad at measuring sleep, says a new study.
Dec 28, 2015, 21:13 PM IST