A wearable electronic apparatus, a computer program and a method are disclosed. Physical activity data measured relating to a user of a wearable electronic apparatus is obtained. An exercise mode of the wearable electronic apparatus is switched on such that information related to the physical activity data is outputted to the user. While the exercise mode is on, wireless application data is received, and, only if the application data fulfills a predetermined relevance condition, the application data is outputted to the user.