Mastering race-day hydration with this wearable technology

Before getting to the start line of the Boston Marathon, runners spend months practicing race-day hydration strategies. But ever-changing factors like exertion, the weather and fuel types can keep them guessing, even on marathon morning. A new wearable technology from a Boston company is helping runners prepare for these start lines and has been tested by the likes of Boston Marathon race director Dave McGillivray and Paralympic athlete Tatyana McFadden. Nix Biosensors is a consumer diagnostic…