• by Gavin O'Malley , Staff Writer @mp_gavin, March 17, 2014

New details have emerged regarding Apple’s ambitious heath and fitness-tracking service, Healthbook. Still in beta, “Versions of Healthbook in testing are capable of tracking several different health and fitness data points,” 9To5Mac’s Mark Gurman reports. Yet, “It is currently uncertain where this data will actually be sourced from,” Gurman notes. “I believe that the data will be sourced from at least one of four possibilities: the iPhone itself, third-party App Store apps, third-party devices, or a future Apple wearable device (iWatch).”