Electrostimulators with this function use electrical impulses to induce muscle contractions, most commonly in the legs and feet. This process mimics the natural muscle activity during walking and activates the so-called "muscle pump." This is a mechanism where contracting muscles compress the veins, thereby helping to pump blood from the lower extremities back towards the heart. In this way, the devices contribute to improved blood circulation, which can lead to the alleviation of swelling, the feeling of heavy legs, or cramps. This stimulation, referred to as EMS (Electrical Muscle Stimulation), is particularly suitable for people with sedentary jobs, limited mobility, or as a supplement for regeneration after physical exertion.