A lot of wearable technology is designed to monitor fitness. Some consumer devices monitor heart rates and the distance you might have travelled while cycling or jogging, for instance. This sort of wearable technology clearly has a benefit to healthcare as it encourages people to exercise more and to achieve their daily fitness goals. However, purpose-built medical wearables also exist. These are used in a wide variety of ways to collect data on patients in a manner that clinicians can monitor. Some wearables help to overcome disabilities, such as hearing loss, for example, while others monitor blood sugar levels, something that can help people with diabetes a great deal. Overall, the data that wearable technology provides public health planners helps them to make more informed policies. Recently, some countries have used smartphones and wearable technology to report on the movement of people as a tool in fighting epidemiological outbreaks.