Fitness and rehabilitation aid

A fitness and rehabilitation aid configured to use centrifugal forces to take a body center of mass of a user away from a first position in order to optimally stimulate desired muscle parts of a user, the fitness and rehabilitation aid comprising:

• a loading head having a body and configured for achieving a desired centrifugal force;
• a handle configured for grasping by the user;
• and
• a flexible connecting element that interconnects the loading head and the handle;
• wherein:
• a length of the flexible connecting element between an orifice of the handle and a hole for inserting the connecting element to the loading head is at least 600 mm;
• a weight of the loading head is at least 250 g and does not exceed 600 g;
• the loading head is adapted for holding replaceable weights and contains at least one hole or recess for weights placement;
• the at least one hole or recess for weights placement is a pass-through in the body of the loading head;
• the flexible connecting element surrounds the at least one hole or recess for weights placement from opposing sides thereof and the flexible connecting element contracts around the replaceable weights due to the desired centrifugal force;
• and
• the flexible connecting element is embedded into lengthwise grooves that go through the at least one hole or recess for weights placement.