<p>The present invention relates to an exercise system for giving feedback to a user thereof and to a method for communication between different devices in the exercise system. The exercise system comprises at least two body coupled communication modules (14) for forming a body area network and at least one exercise device (2) comprising at least one sensor (6), feedback means (8) and one of the at least two body coupled communication devices. The exercise system further comprises a processing unit (4) for collecting and processing user data from the at least one sensor (6) and output the processed data on the feedback means (8) via the body area network in order to give the user feedback on his exercise.</p>