Heart rate tracking techniques

Embodiments of the present disclosure may provide systems, methods, and computer-readable media for tracking a user's heart rate using different techniques associated with different scenarios. For example, at least a first sensor of the one or more sensors may be used to track motion of a user wearing the wearable device. A physical state of the user may also be tracked using at least a second sensor of the one or more sensors. In some cases, it may be determined whether an application of a wearable device has been launched. In addition, a category of activity of the user may be determined based at least in part on the motion of the user, the physical state of the user, and/or whether the application has been launched. Heart rate data of the user may be collected, and the heart rate data may be classified based at least in part on the determined category. 本公开的实施方案可提供用于使用与不同情景相关联的不同技术来跟踪用户的心率的系统、方法和计算机可读介质。例如，可使用一个或多个传感器中的至少第一传感器来跟踪穿戴着可穿戴设备的用户的运动。还可使用一个或多个传感器中的至少第二传感器来跟踪用户的物理状态。在一些情况下，可确定可穿戴设备的应用是否已启动。另外，可至少部分