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Applying the function of the spring tape measures, it is possible for the tape to return after releasing it, inside the heel of the shoes there is also an elastic tape with high elasticity attached to a flexible plastic handle which makes some of tensional (elastic) movements possible for the user. In front of the shoes(sneakers) there is a hook which is involved for the sake of biceps strain movements.
Upon the handle of the elastic tape a chronometer is installed which helps user can measure the time spent on his/her experiences. the movements of the elastic tape cause the biceps and triceps of arm and also the legs muscles become strong
Islamic Azad University of Thehran