A system for advising an exerciser about his physical activities, associated either with displacement of the exerciser itself or of an object displaced by the exerciser, or an object displaced simultaneously with the exerciser. The system comprises a first unit for monitoring the activities. This unit is not in physical contact with the exerciser or the object, displaced by the exerciser. The first unit is capable to collect raw data defining the activities either in terms of distance or acceleration. The first unit transmits the collected raw data in a wireless fashion to a second unit, which receives the transmitted raw data, processes it and calculates various parameters, defining the said physical activities, and represents the calculated parameters in a form recognizable by the exerciser. The system enables tracking, recording and updating the relevant information, provides improved feedback and thus helps to the exercising individual to improve his performances.