If you’ve exercised while watching a fitness tracker, you’ve probably seen it tell you to stay in a fat-burning zone. Oppo is changing how that zone gets calculated with a new mode called FatMax. The feature calculates your own fat-burning heart rate range instead of giving everyone the same generic range. A fat-burning zone is [...] The post Oppo announces new FatMax Mode that calculates your personal fat-burning heart rate range appeared first on Gizmochina .