BioSport In-Ear Headphones - Built-in optical sensor for continuous heart rate monitoring and integration with RunKeeper to supplement heart rate tracking with pace, distance, elevation, and calorie tracking metrics. I'll be able to see when I'm relaxed and when I'm working hard. (Not that I can't figure that out myself...)
Moving towards more wearable / quantified self apps, my plan is to create an mHealth only password strategy.
The reason: Symantec's study of available devices and apps. Some apps - transmitted sensitive data like username and passwords in clear text; used very low level and easily crackable types of security; exposed other personal information like email addresses.
Good article by iMedicalApps http://www.imedicalapps.com/2014/08/risky-behavior-health-tracking-quantified-self-apps-devices-play-loose-data/