HealthKit is the set of protocols developers and vendor can use to tie into Apple's Health app, which lets us get all of our health and fitness information all in one place. With HealthKit, we can also share information between apps — let one step tracker know what another step tracker has recorded — and also with our healthcare professionals, if we so choose. It's still early days and not every developer or vendor supports it yet, but everyone supports iOS in some way. At CES 2015, Georgia and Anthony took a look at some of the highlight from the health and fitness industry, and from HealthKit.