This fitness wearable let me track an often overlooked metric - and it's on sale

ZDNET's key takeaways The Core body sensor is on sale now for $228. It provides an accurate internal body temperature, is lightweight, has a long battery life, and has a functional smartphone app. The device is rather expensive and needs to be connected to a chest strap or adhesive patch. View now at Core Wearable technology has advanced significantly over the last decade, and amateur athletes today can capture an extensive amount of data with their smartwatches, GPS sports watches, and external heart rate monitors. For the past couple of months I have been running and cycling with the Core sensor, a wearable device that captures and records your internal body temperature without the need for any more invasive methods. Also: Best sports watches Heart rate tracking has historically been the most common metric in performance tracking for runners, but over the last couple of years more eyes have been looking at running power. Most every new GPS sports watch and smartwatch now capture ... Read full article.