The present invention relates to compositions based on silver and hyaluronic acid and their use in the management of cutaneous lesions of various origin mainly when characterized by the presence of exudate and hence at high risk of infection. A system is provided using multiple exercise courses that make a user perform various kinds of exercises without overburdening the user and that include entertainment factors. This temperature-correlated bias current also runs through this resistor. If the GMR contact is biased above the critical value, the device may function as a microwave oscillator.