An insanely detailed leak of Apple’s forthcoming Healthbook software (likely a part of iOS 8) by Mark Gurman:
Each category of functionality is a card in the Healthbook. Cards are distinguished by a color, and the tabs can be arranged to fit user preferences. As can be seen in the above images, Healthbook has sections that can track data pertaining to bloodwork, heart rate, hydration, blood pressure, physical activity, nutrition, blood sugar, sleep, respiratory rate, oxygen saturation, and weight.
The big question, as Gurman notes at the end, is which devices will supply the data to Healthbook? Certainly, the iPhone itself is one (especially the models with an M7 chip). And it sure sounds like some sort of forthcoming “iWatch" would be another. But given the scope of Healthbook, it also seems likely to me that Apple will allow third-party devices to work with the software. This being Apple, you can be sure such a list will be curated, at least at first.
To that end, just remember that Tim Cook remains on Nike’s Board of Directors…