In the connected fitness world, we have yet to see one truly all-purpose device. There are a number of high-end gadgets, including the Garmin Vivoactive and the Fitbit Surge, that have many important features for workout tracking. However, health is measured by much more than how many times you hit the gym. Under Armour wants to expand personal fitness tech from just one device to an entire ecosystem of hardware and software that works together to help you understand your body.
